Finding the Fourth Proportional to 10,191.67, 14,064.22 and 5,715.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,191.67 : 14,064.22 = 5,715.70 : x
2. Step 2: Convert to fraction form
   10,191.67/14,064.22 = 5,715.70/x
3. Step 3: Cross multiply
   10,191.67x = 14,064.22 × 5,715.70
4. Step 4: Simplify right side
   10,191.67x = 80,386,862.25
5. Step 5: Solve for x
   x = 80,386,862.25/10,191.67
6. Step 6: Final answer
   x = 7,887.51