Finding the Fourth Proportional to 16,079.61, 24,121.76 and 4,987.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,079.61 : 24,121.76 = 4,987.20 : x
2. Step 2: Convert to fraction form
   16,079.61/24,121.76 = 4,987.20/x
3. Step 3: Cross multiply
   16,079.61x = 24,121.76 × 4,987.20
4. Step 4: Simplify right side
   16,079.61x = 120,300,041.47
5. Step 5: Solve for x
   x = 120,300,041.47/16,079.61
6. Step 6: Final answer
   x = 7,481.53