Finding the Fourth Proportional to 9,659.76, 13,331.31 and 5,410.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,659.76 : 13,331.31 = 5,410.75 : x
2. Step 2: Convert to fraction form
   9,659.76/13,331.31 = 5,410.75/x
3. Step 3: Cross multiply
   9,659.76x = 13,331.31 × 5,410.75
4. Step 4: Simplify right side
   9,659.76x = 72,132,372.18
5. Step 5: Solve for x
   x = 72,132,372.18/9,659.76
6. Step 6: Final answer
   x = 7,467.31