Finding the Fourth Proportional to 9,390.52, 12,957.34 and 5,615.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,390.52 : 12,957.34 = 5,615.22 : x
2. Step 2: Convert to fraction form
   9,390.52/12,957.34 = 5,615.22/x
3. Step 3: Cross multiply
   9,390.52x = 12,957.34 × 5,615.22
4. Step 4: Simplify right side
   9,390.52x = 72,758,314.71
5. Step 5: Solve for x
   x = 72,758,314.71/9,390.52
6. Step 6: Final answer
   x = 7,748.06