Finding the Fourth Proportional to 9,139.60, 12,615.04 and 5,363.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139.60 : 12,615.04 = 5,363.32 : x
2. Step 2: Convert to fraction form
   9,139.60/12,615.04 = 5,363.32/x
3. Step 3: Cross multiply
   9,139.60x = 12,615.04 × 5,363.32
4. Step 4: Simplify right side
   9,139.60x = 67,658,496.33
5. Step 5: Solve for x
   x = 67,658,496.33/9,139.60
6. Step 6: Final answer
   x = 7,402.79