Finding the Fourth Proportional to 10,876.76, 16,320.72 and 5,330

Step by Step Solution

1. Step 1: Write the proportion equation
   10,876.76 : 16,320.72 = 5,330 : x
2. Step 2: Convert to fraction form
   10,876.76/16,320.72 = 5,330/x
3. Step 3: Cross multiply
   10,876.76x = 16,320.72 × 5,330
4. Step 4: Simplify right side
   10,876.76x = 86,989,437.60
5. Step 5: Solve for x
   x = 86,989,437.60/10,876.76
6. Step 6: Final answer
   x = 7,997.73