Finding the Fourth Proportional to 22,773,665.58, 31,426,876.86 and 12,987,259.53

Step by Step Solution

1. Step 1: Write the proportion equation
   22,773,665.58 : 31,426,876.86 = 12,987,259.53 : x
2. Step 2: Convert to fraction form
   22,773,665.58/31,426,876.86 = 12,987,259.53/x
3. Step 3: Cross multiply
   22,773,665.58x = 31,426,876.86 × 12,987,259.53
4. Step 4: Simplify right side
   22,773,665.58x = 408,149,005,998,171.44
5. Step 5: Solve for x
   x = 408,149,005,998,171.44/22,773,665.58
6. Step 6: Final answer
   x = 17,921,972.40