Finding the Fourth Proportional to 22,690,429.86, 31,312,993.05 and 12,377,198.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,690,429.86 : 31,312,993.05 = 12,377,198.82 : x
2. Step 2: Convert to fraction form
   22,690,429.86/31,312,993.05 = 12,377,198.82/x
3. Step 3: Cross multiply
   22,690,429.86x = 31,312,993.05 × 12,377,198.82
4. Step 4: Simplify right side
   22,690,429.86x = 387,567,140,629,128.25
5. Step 5: Solve for x
   x = 387,567,140,629,128.25/22,690,429.86
6. Step 6: Final answer
   x = 17,080,643.38