Finding the Fourth Proportional to 6,748.16, 10,128.56 and 4,156.16

Step by Step Solution

1. Step 1: Write the proportion equation
   6,748.16 : 10,128.56 = 4,156.16 : x
2. Step 2: Convert to fraction form
   6,748.16/10,128.56 = 4,156.16/x
3. Step 3: Cross multiply
   6,748.16x = 10,128.56 × 4,156.16
4. Step 4: Simplify right side
   6,748.16x = 42,095,915.93
5. Step 5: Solve for x
   x = 42,095,915.93/6,748.16
6. Step 6: Final answer
   x = 6,238.13