Finding the Fourth Proportional to 10,276.61, 15,411.87 and 5,343.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,276.61 : 15,411.87 = 5,343.57 : x
2. Step 2: Convert to fraction form
   10,276.61/15,411.87 = 5,343.57/x
3. Step 3: Cross multiply
   10,276.61x = 15,411.87 × 5,343.57
4. Step 4: Simplify right side
   10,276.61x = 82,354,406.18
5. Step 5: Solve for x
   x = 82,354,406.18/10,276.61
6. Step 6: Final answer
   x = 8,013.78