Finding the Fourth Proportional to 22,872,640.78, 31,564,465.71 and 12,559,585.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,872,640.78 : 31,564,465.71 = 12,559,585.31 : x
2. Step 2: Convert to fraction form
   22,872,640.78/31,564,465.71 = 12,559,585.31/x
3. Step 3: Cross multiply
   22,872,640.78x = 31,564,465.71 × 12,559,585.31
4. Step 4: Simplify right side
   22,872,640.78x = 396,436,599,833,408.38
5. Step 5: Solve for x
   x = 396,436,599,833,408.38/22,872,640.78
6. Step 6: Final answer
   x = 17,332,349.32