Finding the Fourth Proportional to 5,121.32, 7,689.27 and 4,886.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,121.32 : 7,689.27 = 4,886.42 : x
2. Step 2: Convert to fraction form
   5,121.32/7,689.27 = 4,886.42/x
3. Step 3: Cross multiply
   5,121.32x = 7,689.27 × 4,886.42
4. Step 4: Simplify right side
   5,121.32x = 37,573,002.71
5. Step 5: Solve for x
   x = 37,573,002.71/5,121.32
6. Step 6: Final answer
   x = 7,336.59