Finding the Fourth Proportional to 12,250.98, 18,400.77 and 10,495.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,250.98 : 18,400.77 = 10,495.31 : x
2. Step 2: Convert to fraction form
   12,250.98/18,400.77 = 10,495.31/x
3. Step 3: Cross multiply
   12,250.98x = 18,400.77 × 10,495.31
4. Step 4: Simplify right side
   12,250.98x = 193,121,693.38
5. Step 5: Solve for x
   x = 193,121,693.38/12,250.98
6. Step 6: Final answer
   x = 15,763.78