Finding the Fourth Proportional to 22,510.71, 31,064.34 and 12,438.93

Step by Step Solution

1. Step 1: Write the proportion equation
   22,510.71 : 31,064.34 = 12,438.93 : x
2. Step 2: Convert to fraction form
   22,510.71/31,064.34 = 12,438.93/x
3. Step 3: Cross multiply
   22,510.71x = 31,064.34 × 12,438.93
4. Step 4: Simplify right side
   22,510.71x = 386,407,150.76
5. Step 5: Solve for x
   x = 386,407,150.76/22,510.71
6. Step 6: Final answer
   x = 17,165.48