Finding the Fourth Proportional to 5,238.79, 7,229.89 and 2,880.93

Step by Step Solution

1. Step 1: Write the proportion equation
   5,238.79 : 7,229.89 = 2,880.93 : x
2. Step 2: Convert to fraction form
   5,238.79/7,229.89 = 2,880.93/x
3. Step 3: Cross multiply
   5,238.79x = 7,229.89 × 2,880.93
4. Step 4: Simplify right side
   5,238.79x = 20,828,807.00
5. Step 5: Solve for x
   x = 20,828,807.00/5,238.79
6. Step 6: Final answer
   x = 3,975.88