Finding the Fourth Proportional to 9,655.88, 13,323.57 and 5,407.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,655.88 : 13,323.57 = 5,407.12 : x
2. Step 2: Convert to fraction form
   9,655.88/13,323.57 = 5,407.12/x
3. Step 3: Cross multiply
   9,655.88x = 13,323.57 × 5,407.12
4. Step 4: Simplify right side
   9,655.88x = 72,042,138.20
5. Step 5: Solve for x
   x = 72,042,138.20/9,655.88
6. Step 6: Final answer
   x = 7,460.96