Finding the Fourth Proportional to 9,659.72, 13,331.26 and 5,410.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,659.72 : 13,331.26 = 5,410.72 : x
2. Step 2: Convert to fraction form
   9,659.72/13,331.26 = 5,410.72/x
3. Step 3: Cross multiply
   9,659.72x = 13,331.26 × 5,410.72
4. Step 4: Simplify right side
   9,659.72x = 72,131,715.11
5. Step 5: Solve for x
   x = 72,131,715.11/9,659.72
6. Step 6: Final answer
   x = 7,467.27