Finding the Fourth Proportional to 11,665.59, 17,505.68 and 4,740.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,665.59 : 17,505.68 = 4,740.09 : x
2. Step 2: Convert to fraction form
   11,665.59/17,505.68 = 4,740.09/x
3. Step 3: Cross multiply
   11,665.59x = 17,505.68 × 4,740.09
4. Step 4: Simplify right side
   11,665.59x = 82,978,475.01
5. Step 5: Solve for x
   x = 82,978,475.01/11,665.59
6. Step 6: Final answer
   x = 7,113.10