Finding the Fourth Proportional to 12,417.31, 18,639.23 and 5,026.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,417.31 : 18,639.23 = 5,026.60 : x
2. Step 2: Convert to fraction form
   12,417.31/18,639.23 = 5,026.60/x
3. Step 3: Cross multiply
   12,417.31x = 18,639.23 × 5,026.60
4. Step 4: Simplify right side
   12,417.31x = 93,691,953.52
5. Step 5: Solve for x
   x = 93,691,953.52/12,417.31
6. Step 6: Final answer
   x = 7,545.27