Finding the Fourth Proportional to 22,801.90, 31,466.54 and 12,730.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,801.90 : 31,466.54 = 12,730.25 : x
2. Step 2: Convert to fraction form
   22,801.90/31,466.54 = 12,730.25/x
3. Step 3: Cross multiply
   22,801.90x = 31,466.54 × 12,730.25
4. Step 4: Simplify right side
   22,801.90x = 400,577,026.60
5. Step 5: Solve for x
   x = 400,577,026.60/22,801.90
6. Step 6: Final answer
   x = 17,567.70