Finding the Fourth Proportional to 7,854.83, 10,835.34 and 4,978.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,854.83 : 10,835.34 = 4,978.30 : x
2. Step 2: Convert to fraction form
   7,854.83/10,835.34 = 4,978.30/x
3. Step 3: Cross multiply
   7,854.83x = 10,835.34 × 4,978.30
4. Step 4: Simplify right side
   7,854.83x = 53,941,573.12
5. Step 5: Solve for x
   x = 53,941,573.12/7,854.83
6. Step 6: Final answer
   x = 6,867.31