Finding the Fourth Proportional to 10,399.56, 15,587.46 and 4,474.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,399.56 : 15,587.46 = 4,474.50 : x
2. Step 2: Convert to fraction form
   10,399.56/15,587.46 = 4,474.50/x
3. Step 3: Cross multiply
   10,399.56x = 15,587.46 × 4,474.50
4. Step 4: Simplify right side
   10,399.56x = 69,746,089.77
5. Step 5: Solve for x
   x = 69,746,089.77/10,399.56
6. Step 6: Final answer
   x = 6,706.64