Finding the Fourth Proportional to 10,189.45, 14,061.42 and 5,713.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,189.45 : 14,061.42 = 5,713.21 : x
2. Step 2: Convert to fraction form
   10,189.45/14,061.42 = 5,713.21/x
3. Step 3: Cross multiply
   10,189.45x = 14,061.42 × 5,713.21
4. Step 4: Simplify right side
   10,189.45x = 80,335,862.93
5. Step 5: Solve for x
   x = 80,335,862.93/10,189.45
6. Step 6: Final answer
   x = 7,884.22