Finding the Fourth Proportional to 15,650.55, 23,479.47 and 5,120.53

Step by Step Solution

1. Step 1: Write the proportion equation
   15,650.55 : 23,479.47 = 5,120.53 : x
2. Step 2: Convert to fraction form
   15,650.55/23,479.47 = 5,120.53/x
3. Step 3: Cross multiply
   15,650.55x = 23,479.47 × 5,120.53
4. Step 4: Simplify right side
   15,650.55x = 120,227,287.95
5. Step 5: Solve for x
   x = 120,227,287.95/15,650.55
6. Step 6: Final answer
   x = 7,681.99