Finding the Fourth Proportional to 11,009.38, 15,187.89 and 7,028.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,009.38 : 15,187.89 = 7,028.50 : x
2. Step 2: Convert to fraction form
   11,009.38/15,187.89 = 7,028.50/x
3. Step 3: Cross multiply
   11,009.38x = 15,187.89 × 7,028.50
4. Step 4: Simplify right side
   11,009.38x = 106,748,084.87
5. Step 5: Solve for x
   x = 106,748,084.87/11,009.38
6. Step 6: Final answer
   x = 9,696.10