Finding the Fourth Proportional to 8,665.89, 13,002.98 and 4,505.13

Step by Step Solution

1. Step 1: Write the proportion equation
   8,665.89 : 13,002.98 = 4,505.13 : x
2. Step 2: Convert to fraction form
   8,665.89/13,002.98 = 4,505.13/x
3. Step 3: Cross multiply
   8,665.89x = 13,002.98 × 4,505.13
4. Step 4: Simplify right side
   8,665.89x = 58,580,092.76
5. Step 5: Solve for x
   x = 58,580,092.76/8,665.89
6. Step 6: Final answer
   x = 6,759.85