Finding the Fourth Proportional to 22,530.29, 31,090.55 and 12,458.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,530.29 : 31,090.55 = 12,458.12 : x
2. Step 2: Convert to fraction form
   22,530.29/31,090.55 = 12,458.12/x
3. Step 3: Cross multiply
   22,530.29x = 31,090.55 × 12,458.12
4. Step 4: Simplify right side
   22,530.29x = 387,329,585.02
5. Step 5: Solve for x
   x = 387,329,585.02/22,530.29
6. Step 6: Final answer
   x = 17,191.51