Finding the Fourth Proportional to 22,585.04, 31,171.72 and 13,031.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,585.04 : 31,171.72 = 13,031.10 : x
2. Step 2: Convert to fraction form
   22,585.04/31,171.72 = 13,031.10/x
3. Step 3: Cross multiply
   22,585.04x = 31,171.72 × 13,031.10
4. Step 4: Simplify right side
   22,585.04x = 406,201,767.91
5. Step 5: Solve for x
   x = 406,201,767.91/22,585.04
6. Step 6: Final answer
   x = 17,985.44