Finding the Fourth Proportional to 12,403.60, 18,610.90 and 5,022.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,403.60 : 18,610.90 = 5,022.47 : x
2. Step 2: Convert to fraction form
   12,403.60/18,610.90 = 5,022.47/x
3. Step 3: Cross multiply
   12,403.60x = 18,610.90 × 5,022.47
4. Step 4: Simplify right side
   12,403.60x = 93,472,720.89
5. Step 5: Solve for x
   x = 93,472,720.89/12,403.60
6. Step 6: Final answer
   x = 7,535.94