Finding the Fourth Proportional to 5,139.96, 7,093.45 and 2,902.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.96 : 7,093.45 = 2,902.05 : x
2. Step 2: Convert to fraction form
   5,139.96/7,093.45 = 2,902.05/x
3. Step 3: Cross multiply
   5,139.96x = 7,093.45 × 2,902.05
4. Step 4: Simplify right side
   5,139.96x = 20,585,535.46
5. Step 5: Solve for x
   x = 20,585,535.46/5,139.96
6. Step 6: Final answer
   x = 4,005.00