Finding the Fourth Proportional to 10,854.32, 14,991.21 and 7,311.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,854.32 : 14,991.21 = 7,311.38 : x
2. Step 2: Convert to fraction form
   10,854.32/14,991.21 = 7,311.38/x
3. Step 3: Cross multiply
   10,854.32x = 14,991.21 × 7,311.38
4. Step 4: Simplify right side
   10,854.32x = 109,606,358.01
5. Step 5: Solve for x
   x = 109,606,358.01/10,854.32
6. Step 6: Final answer
   x = 10,097.95