Finding the Fourth Proportional to 22,588.71, 31,169.70 and 13,031.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,588.71 : 31,169.70 = 13,031.72 : x
2. Step 2: Convert to fraction form
   22,588.71/31,169.70 = 13,031.72/x
3. Step 3: Cross multiply
   22,588.71x = 31,169.70 × 13,031.72
4. Step 4: Simplify right side
   22,588.71x = 406,194,647.04
5. Step 5: Solve for x
   x = 406,194,647.04/22,588.71
6. Step 6: Final answer
   x = 17,982.20