Finding the Fourth Proportional to 6,081.78, 8,385.18 and 4,961.58

Step by Step Solution

1. Step 1: Write the proportion equation
   6,081.78 : 8,385.18 = 4,961.58 : x
2. Step 2: Convert to fraction form
   6,081.78/8,385.18 = 4,961.58/x
3. Step 3: Cross multiply
   6,081.78x = 8,385.18 × 4,961.58
4. Step 4: Simplify right side
   6,081.78x = 41,603,741.38
5. Step 5: Solve for x
   x = 41,603,741.38/6,081.78
6. Step 6: Final answer
   x = 6,840.72