Finding the Fourth Proportional to 5,714.40, 7,903.35 and 5,124.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,714.40 : 7,903.35 = 5,124.72 : x
2. Step 2: Convert to fraction form
   5,714.40/7,903.35 = 5,124.72/x
3. Step 3: Cross multiply
   5,714.40x = 7,903.35 × 5,124.72
4. Step 4: Simplify right side
   5,714.40x = 40,502,455.81
5. Step 5: Solve for x
   x = 40,502,455.81/5,714.40
6. Step 6: Final answer
   x = 7,087.79