Finding the Fourth Proportional to 5,298.72, 7,312.14 and 2,940.81

Step by Step Solution

1. Step 1: Write the proportion equation
   5,298.72 : 7,312.14 = 2,940.81 : x
2. Step 2: Convert to fraction form
   5,298.72/7,312.14 = 2,940.81/x
3. Step 3: Cross multiply
   5,298.72x = 7,312.14 × 2,940.81
4. Step 4: Simplify right side
   5,298.72x = 21,503,614.43
5. Step 5: Solve for x
   x = 21,503,614.43/5,298.72
6. Step 6: Final answer
   x = 4,058.27