Finding the Fourth Proportional to 12,842.74, 19,266.72 and 4,078.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,842.74 : 19,266.72 = 4,078.18 : x
2. Step 2: Convert to fraction form
   12,842.74/19,266.72 = 4,078.18/x
3. Step 3: Cross multiply
   12,842.74x = 19,266.72 × 4,078.18
4. Step 4: Simplify right side
   12,842.74x = 78,573,152.17
5. Step 5: Solve for x
   x = 78,573,152.17/12,842.74
6. Step 6: Final answer
   x = 6,118.10