Finding the Fourth Proportional to 9,646.47, 13,312.11 and 5,454.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,646.47 : 13,312.11 = 5,454.72 : x
2. Step 2: Convert to fraction form
   9,646.47/13,312.11 = 5,454.72/x
3. Step 3: Cross multiply
   9,646.47x = 13,312.11 × 5,454.72
4. Step 4: Simplify right side
   9,646.47x = 72,613,832.66
5. Step 5: Solve for x
   x = 72,613,832.66/9,646.47
6. Step 6: Final answer
   x = 7,527.50