Finding the Fourth Proportional to 11,458.59, 17,171.67 and 4,878.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,458.59 : 17,171.67 = 4,878.15 : x
2. Step 2: Convert to fraction form
   11,458.59/17,171.67 = 4,878.15/x
3. Step 3: Cross multiply
   11,458.59x = 17,171.67 × 4,878.15
4. Step 4: Simplify right side
   11,458.59x = 83,765,982.01
5. Step 5: Solve for x
   x = 83,765,982.01/11,458.59
6. Step 6: Final answer
   x = 7,310.32