Finding the Fourth Proportional to 6,100.08, 8,415.72 and 3,978.08

Step by Step Solution

1. Step 1: Write the proportion equation
   6,100.08 : 8,415.72 = 3,978.08 : x
2. Step 2: Convert to fraction form
   6,100.08/8,415.72 = 3,978.08/x
3. Step 3: Cross multiply
   6,100.08x = 8,415.72 × 3,978.08
4. Step 4: Simplify right side
   6,100.08x = 33,478,407.42
5. Step 5: Solve for x
   x = 33,478,407.42/6,100.08
6. Step 6: Final answer
   x = 5,488.19