Finding the Fourth Proportional to 13,255.70, 19,883.71 and 3,394.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,255.70 : 19,883.71 = 3,394.72 : x
2. Step 2: Convert to fraction form
   13,255.70/19,883.71 = 3,394.72/x
3. Step 3: Cross multiply
   13,255.70x = 19,883.71 × 3,394.72
4. Step 4: Simplify right side
   13,255.70x = 67,499,582.55
5. Step 5: Solve for x
   x = 67,499,582.55/13,255.70
6. Step 6: Final answer
   x = 5,092.12