Finding the Fourth Proportional to 5,116.78, 7,062.34 and 2,993.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,116.78 : 7,062.34 = 2,993.30 : x
2. Step 2: Convert to fraction form
   5,116.78/7,062.34 = 2,993.30/x
3. Step 3: Cross multiply
   5,116.78x = 7,062.34 × 2,993.30
4. Step 4: Simplify right side
   5,116.78x = 21,139,702.32
5. Step 5: Solve for x
   x = 21,139,702.32/5,116.78
6. Step 6: Final answer
   x = 4,131.45