Finding the Fourth Proportional to 10,891.16, 15,027.83 and 7,311.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,891.16 : 15,027.83 = 7,311.32 : x
2. Step 2: Convert to fraction form
   10,891.16/15,027.83 = 7,311.32/x
3. Step 3: Cross multiply
   10,891.16x = 15,027.83 × 7,311.32
4. Step 4: Simplify right side
   10,891.16x = 109,873,274.04
5. Step 5: Solve for x
   x = 109,873,274.04/10,891.16
6. Step 6: Final answer
   x = 10,088.30