Finding the Fourth Proportional to 22,499.91, 31,049.70 and 12,429.06

Step by Step Solution

1. Step 1: Write the proportion equation
   22,499.91 : 31,049.70 = 12,429.06 : x
2. Step 2: Convert to fraction form
   22,499.91/31,049.70 = 12,429.06/x
3. Step 3: Cross multiply
   22,499.91x = 31,049.70 × 12,429.06
4. Step 4: Simplify right side
   22,499.91x = 385,918,584.28
5. Step 5: Solve for x
   x = 385,918,584.28/22,499.91
6. Step 6: Final answer
   x = 17,152.01