Finding the Fourth Proportional to 22,570.18, 31,148.01 and 12,499.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,570.18 : 31,148.01 = 12,499.72 : x
2. Step 2: Convert to fraction form
   22,570.18/31,148.01 = 12,499.72/x
3. Step 3: Cross multiply
   22,570.18x = 31,148.01 × 12,499.72
4. Step 4: Simplify right side
   22,570.18x = 389,341,325.69
5. Step 5: Solve for x
   x = 389,341,325.69/22,570.18
6. Step 6: Final answer
   x = 17,250.26