Finding the Fourth Proportional to 9,656.72, 13,325.15 and 5,407.19

Step by Step Solution

1. Step 1: Write the proportion equation
   9,656.72 : 13,325.15 = 5,407.19 : x
2. Step 2: Convert to fraction form
   9,656.72/13,325.15 = 5,407.19/x
3. Step 3: Cross multiply
   9,656.72x = 13,325.15 × 5,407.19
4. Step 4: Simplify right side
   9,656.72x = 72,051,524.17
5. Step 5: Solve for x
   x = 72,051,524.17/9,656.72
6. Step 6: Final answer
   x = 7,461.29