Finding the Fourth Proportional to 5,123.69, 7,070.70 and 2,998.83

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.69 : 7,070.70 = 2,998.83 : x
2. Step 2: Convert to fraction form
   5,123.69/7,070.70 = 2,998.83/x
3. Step 3: Cross multiply
   5,123.69x = 7,070.70 × 2,998.83
4. Step 4: Simplify right side
   5,123.69x = 21,203,865.04
5. Step 5: Solve for x
   x = 21,203,865.04/5,123.69
6. Step 6: Final answer
   x = 4,138.40