Finding the Fourth Proportional to 22,772.90, 31,426.78 and 12,701.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,772.90 : 31,426.78 = 12,701.98 : x
2. Step 2: Convert to fraction form
   22,772.90/31,426.78 = 12,701.98/x
3. Step 3: Cross multiply
   22,772.90x = 31,426.78 × 12,701.98
4. Step 4: Simplify right side
   22,772.90x = 399,182,331.02
5. Step 5: Solve for x
   x = 399,182,331.02/22,772.90
6. Step 6: Final answer
   x = 17,528.83