Finding the Fourth Proportional to 5,123.17, 7,684.72 and 1,425.39

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.17 : 7,684.72 = 1,425.39 : x
2. Step 2: Convert to fraction form
   5,123.17/7,684.72 = 1,425.39/x
3. Step 3: Cross multiply
   5,123.17x = 7,684.72 × 1,425.39
4. Step 4: Simplify right side
   5,123.17x = 10,953,746.70
5. Step 5: Solve for x
   x = 10,953,746.70/5,123.17
6. Step 6: Final answer
   x = 2,138.08