Finding the Fourth Proportional to 10,922.32, 15,061.17 and 7,148.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,922.32 : 15,061.17 = 7,148.71 : x
2. Step 2: Convert to fraction form
   10,922.32/15,061.17 = 7,148.71/x
3. Step 3: Cross multiply
   10,922.32x = 15,061.17 × 7,148.71
4. Step 4: Simplify right side
   10,922.32x = 107,667,936.59
5. Step 5: Solve for x
   x = 107,667,936.59/10,922.32
6. Step 6: Final answer
   x = 9,857.61