Finding the Fourth Proportional to 10,385.63, 15,553.61 and 5,989.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,385.63 : 15,553.61 = 5,989.76 : x
2. Step 2: Convert to fraction form
   10,385.63/15,553.61 = 5,989.76/x
3. Step 3: Cross multiply
   10,385.63x = 15,553.61 × 5,989.76
4. Step 4: Simplify right side
   10,385.63x = 93,162,283.32
5. Step 5: Solve for x
   x = 93,162,283.32/10,385.63
6. Step 6: Final answer
   x = 8,970.31