Finding the Fourth Proportional to 9,664.59, 13,337.13 and 5,415.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,664.59 : 13,337.13 = 5,415.69 : x
2. Step 2: Convert to fraction form
   9,664.59/13,337.13 = 5,415.69/x
3. Step 3: Cross multiply
   9,664.59x = 13,337.13 × 5,415.69
4. Step 4: Simplify right side
   9,664.59x = 72,229,728.23
5. Step 5: Solve for x
   x = 72,229,728.23/9,664.59
6. Step 6: Final answer
   x = 7,473.64