Finding the Fourth Proportional to 10,218.88, 14,103.12 and 5,742.64

Step by Step Solution

1. Step 1: Write the proportion equation
   10,218.88 : 14,103.12 = 5,742.64 : x
2. Step 2: Convert to fraction form
   10,218.88/14,103.12 = 5,742.64/x
3. Step 3: Cross multiply
   10,218.88x = 14,103.12 × 5,742.64
4. Step 4: Simplify right side
   10,218.88x = 80,989,141.04
5. Step 5: Solve for x
   x = 80,989,141.04/10,218.88
6. Step 6: Final answer
   x = 7,925.44