Finding the Fourth Proportional to 11,342.52, 17,009.58 and 3,945

Step by Step Solution

1. Step 1: Write the proportion equation
   11,342.52 : 17,009.58 = 3,945 : x
2. Step 2: Convert to fraction form
   11,342.52/17,009.58 = 3,945/x
3. Step 3: Cross multiply
   11,342.52x = 17,009.58 × 3,945
4. Step 4: Simplify right side
   11,342.52x = 67,102,793.10
5. Step 5: Solve for x
   x = 67,102,793.10/11,342.52
6. Step 6: Final answer
   x = 5,916.04