Finding the Fourth Proportional to 7,978.18, 11,011.78 and 4,833.76

Step by Step Solution

1. Step 1: Write the proportion equation
   7,978.18 : 11,011.78 = 4,833.76 : x
2. Step 2: Convert to fraction form
   7,978.18/11,011.78 = 4,833.76/x
3. Step 3: Cross multiply
   7,978.18x = 11,011.78 × 4,833.76
4. Step 4: Simplify right side
   7,978.18x = 53,228,301.69
5. Step 5: Solve for x
   x = 53,228,301.69/7,978.18
6. Step 6: Final answer
   x = 6,671.73