Finding the Fourth Proportional to 8,947.78, 13,419.63 and 3,401.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,947.78 : 13,419.63 = 3,401.74 : x
2. Step 2: Convert to fraction form
   8,947.78/13,419.63 = 3,401.74/x
3. Step 3: Cross multiply
   8,947.78x = 13,419.63 × 3,401.74
4. Step 4: Simplify right side
   8,947.78x = 45,650,092.16
5. Step 5: Solve for x
   x = 45,650,092.16/8,947.78
6. Step 6: Final answer
   x = 5,101.83