Finding the Fourth Proportional to 10,591.43, 15,876.81 and 5,043.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,591.43 : 15,876.81 = 5,043.28 : x
2. Step 2: Convert to fraction form
   10,591.43/15,876.81 = 5,043.28/x
3. Step 3: Cross multiply
   10,591.43x = 15,876.81 × 5,043.28
4. Step 4: Simplify right side
   10,591.43x = 80,071,198.34
5. Step 5: Solve for x
   x = 80,071,198.34/10,591.43
6. Step 6: Final answer
   x = 7,560.00