Finding the Fourth Proportional to 6,915.74, 10,364.73 and 4,143.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,915.74 : 10,364.73 = 4,143.98 : x
2. Step 2: Convert to fraction form
   6,915.74/10,364.73 = 4,143.98/x
3. Step 3: Cross multiply
   6,915.74x = 10,364.73 × 4,143.98
4. Step 4: Simplify right side
   6,915.74x = 42,951,233.83
5. Step 5: Solve for x
   x = 42,951,233.83/6,915.74
6. Step 6: Final answer
   x = 6,210.65