Finding the Fourth Proportional to 16,800.72, 25,199.28 and 5,114.04

Step by Step Solution

1. Step 1: Write the proportion equation
   16,800.72 : 25,199.28 = 5,114.04 : x
2. Step 2: Convert to fraction form
   16,800.72/25,199.28 = 5,114.04/x
3. Step 3: Cross multiply
   16,800.72x = 25,199.28 × 5,114.04
4. Step 4: Simplify right side
   16,800.72x = 128,870,125.89
5. Step 5: Solve for x
   x = 128,870,125.89/16,800.72
6. Step 6: Final answer
   x = 7,670.51