Finding the Fourth Proportional to 22,572,139.83, 31,151,474.03 and 12,784,325.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,572,139.83 : 31,151,474.03 = 12,784,325.21 : x
2. Step 2: Convert to fraction form
   22,572,139.83/31,151,474.03 = 12,784,325.21/x
3. Step 3: Cross multiply
   22,572,139.83x = 31,151,474.03 × 12,784,325.21
4. Step 4: Simplify right side
   22,572,139.83x = 398,250,574,550,710.31
5. Step 5: Solve for x
   x = 398,250,574,550,710.31/22,572,139.83
6. Step 6: Final answer
   x = 17,643,456.83