Finding the Fourth Proportional to 5,156.52, 7,116.42 and 4,315.74

Step by Step Solution

1. Step 1: Write the proportion equation
   5,156.52 : 7,116.42 = 4,315.74 : x
2. Step 2: Convert to fraction form
   5,156.52/7,116.42 = 4,315.74/x
3. Step 3: Cross multiply
   5,156.52x = 7,116.42 × 4,315.74
4. Step 4: Simplify right side
   5,156.52x = 30,712,618.45
5. Step 5: Solve for x
   x = 30,712,618.45/5,156.52
6. Step 6: Final answer
   x = 5,956.07