Finding the Fourth Proportional to 10,824.87, 16,242.72 and 4,985.58

Step by Step Solution

1. Step 1: Write the proportion equation
   10,824.87 : 16,242.72 = 4,985.58 : x
2. Step 2: Convert to fraction form
   10,824.87/16,242.72 = 4,985.58/x
3. Step 3: Cross multiply
   10,824.87x = 16,242.72 × 4,985.58
4. Step 4: Simplify right side
   10,824.87x = 80,979,379.98
5. Step 5: Solve for x
   x = 80,979,379.98/10,824.87
6. Step 6: Final answer
   x = 7,480.86