Finding the Fourth Proportional to 10,783.87, 16,177.40 and 5,521.85

Step by Step Solution

1. Step 1: Write the proportion equation
   10,783.87 : 16,177.40 = 5,521.85 : x
2. Step 2: Convert to fraction form
   10,783.87/16,177.40 = 5,521.85/x
3. Step 3: Cross multiply
   10,783.87x = 16,177.40 × 5,521.85
4. Step 4: Simplify right side
   10,783.87x = 89,329,189.02
5. Step 5: Solve for x
   x = 89,329,189.02/10,783.87
6. Step 6: Final answer
   x = 8,283.59