Finding the Fourth Proportional to 8,068.50, 12,098.70 and 3,905.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,068.50 : 12,098.70 = 3,905.91 : x
2. Step 2: Convert to fraction form
   8,068.50/12,098.70 = 3,905.91/x
3. Step 3: Cross multiply
   8,068.50x = 12,098.70 × 3,905.91
4. Step 4: Simplify right side
   8,068.50x = 47,256,433.32
5. Step 5: Solve for x
   x = 47,256,433.32/8,068.50
6. Step 6: Final answer
   x = 5,856.90