Finding the Fourth Proportional to 5,145.32, 7,100.43 and 2,906.93

Step by Step Solution

1. Step 1: Write the proportion equation
   5,145.32 : 7,100.43 = 2,906.93 : x
2. Step 2: Convert to fraction form
   5,145.32/7,100.43 = 2,906.93/x
3. Step 3: Cross multiply
   5,145.32x = 7,100.43 × 2,906.93
4. Step 4: Simplify right side
   5,145.32x = 20,640,452.98
5. Step 5: Solve for x
   x = 20,640,452.98/5,145.32
6. Step 6: Final answer
   x = 4,011.50