Finding the Fourth Proportional to 6,875.28, 10,314.72 and 2,978.76

Step by Step Solution

1. Step 1: Write the proportion equation
   6,875.28 : 10,314.72 = 2,978.76 : x
2. Step 2: Convert to fraction form
   6,875.28/10,314.72 = 2,978.76/x
3. Step 3: Cross multiply
   6,875.28x = 10,314.72 × 2,978.76
4. Step 4: Simplify right side
   6,875.28x = 30,725,075.35
5. Step 5: Solve for x
   x = 30,725,075.35/6,875.28
6. Step 6: Final answer
   x = 4,468.92