Finding the Fourth Proportional to 10,156.70, 14,016.20 and 5,680.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,156.70 : 14,016.20 = 5,680.43 : x
2. Step 2: Convert to fraction form
   10,156.70/14,016.20 = 5,680.43/x
3. Step 3: Cross multiply
   10,156.70x = 14,016.20 × 5,680.43
4. Step 4: Simplify right side
   10,156.70x = 79,618,092.21
5. Step 5: Solve for x
   x = 79,618,092.21/10,156.70
6. Step 6: Final answer
   x = 7,838.98