Finding the Fourth Proportional to 10,268.73, 15,402.69 and 7,139.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,268.73 : 15,402.69 = 7,139.52 : x
2. Step 2: Convert to fraction form
   10,268.73/15,402.69 = 7,139.52/x
3. Step 3: Cross multiply
   10,268.73x = 15,402.69 × 7,139.52
4. Step 4: Simplify right side
   10,268.73x = 109,967,813.31
5. Step 5: Solve for x
   x = 109,967,813.31/10,268.73
6. Step 6: Final answer
   x = 10,709.00