Finding the Fourth Proportional to 11,530.59, 17,287 and 5,286.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,530.59 : 17,287 = 5,286.10 : x
2. Step 2: Convert to fraction form
   11,530.59/17,287 = 5,286.10/x
3. Step 3: Cross multiply
   11,530.59x = 17,287 × 5,286.10
4. Step 4: Simplify right side
   11,530.59x = 91,380,810.70
5. Step 5: Solve for x
   x = 91,380,810.70/11,530.59
6. Step 6: Final answer
   x = 7,925.08