Finding the Fourth Proportional to 10,191.12, 14,063.88 and 5,715.84

Step by Step Solution

1. Step 1: Write the proportion equation
   10,191.12 : 14,063.88 = 5,715.84 : x
2. Step 2: Convert to fraction form
   10,191.12/14,063.88 = 5,715.84/x
3. Step 3: Cross multiply
   10,191.12x = 14,063.88 × 5,715.84
4. Step 4: Simplify right side
   10,191.12x = 80,386,887.86
5. Step 5: Solve for x
   x = 80,386,887.86/10,191.12
6. Step 6: Final answer
   x = 7,887.93