Finding the Fourth Proportional to 22,470.42, 31,008.95 and 12,398.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,470.42 : 31,008.95 = 12,398.94 : x
2. Step 2: Convert to fraction form
   22,470.42/31,008.95 = 12,398.94/x
3. Step 3: Cross multiply
   22,470.42x = 31,008.95 × 12,398.94
4. Step 4: Simplify right side
   22,470.42x = 384,478,048.52
5. Step 5: Solve for x
   x = 384,478,048.52/22,470.42
6. Step 6: Final answer
   x = 17,110.41