Finding the Fourth Proportional to 10,191.48, 14,064.06 and 5,715.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,191.48 : 14,064.06 = 5,715.22 : x
2. Step 2: Convert to fraction form
   10,191.48/14,064.06 = 5,715.22/x
3. Step 3: Cross multiply
   10,191.48x = 14,064.06 × 5,715.22
4. Step 4: Simplify right side
   10,191.48x = 80,379,196.99
5. Step 5: Solve for x
   x = 80,379,196.99/10,191.48
6. Step 6: Final answer
   x = 7,886.90