Finding the Fourth Proportional to 5,561.86, 8,302.21 and 5,150.74

Step by Step Solution

1. Step 1: Write the proportion equation
   5,561.86 : 8,302.21 = 5,150.74 : x
2. Step 2: Convert to fraction form
   5,561.86/8,302.21 = 5,150.74/x
3. Step 3: Cross multiply
   5,561.86x = 8,302.21 × 5,150.74
4. Step 4: Simplify right side
   5,561.86x = 42,762,525.14
5. Step 5: Solve for x
   x = 42,762,525.14/5,561.86
6. Step 6: Final answer
   x = 7,688.53