Finding the Fourth Proportional to 10,128.92, 13,977.87 and 5,652.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,128.92 : 13,977.87 = 5,652.62 : x
2. Step 2: Convert to fraction form
   10,128.92/13,977.87 = 5,652.62/x
3. Step 3: Cross multiply
   10,128.92x = 13,977.87 × 5,652.62
4. Step 4: Simplify right side
   10,128.92x = 79,011,587.52
5. Step 5: Solve for x
   x = 79,011,587.52/10,128.92
6. Step 6: Final answer
   x = 7,800.59