Finding the Fourth Proportional to 11,747.76, 17,620.71 and 3,427.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,747.76 : 17,620.71 = 3,427.83 : x
2. Step 2: Convert to fraction form
   11,747.76/17,620.71 = 3,427.83/x
3. Step 3: Cross multiply
   11,747.76x = 17,620.71 × 3,427.83
4. Step 4: Simplify right side
   11,747.76x = 60,400,798.36
5. Step 5: Solve for x
   x = 60,400,798.36/11,747.76
6. Step 6: Final answer
   x = 5,141.47