Finding the Fourth Proportional to 5,077.16, 7,003.56 and 2,980.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,077.16 : 7,003.56 = 2,980.88 : x
2. Step 2: Convert to fraction form
   5,077.16/7,003.56 = 2,980.88/x
3. Step 3: Cross multiply
   5,077.16x = 7,003.56 × 2,980.88
4. Step 4: Simplify right side
   5,077.16x = 20,876,771.93
5. Step 5: Solve for x
   x = 20,876,771.93/5,077.16
6. Step 6: Final answer
   x = 4,111.90