Finding the Fourth Proportional to 11,965.31, 17,948.69 and 3,645.93

Step by Step Solution

1. Step 1: Write the proportion equation
   11,965.31 : 17,948.69 = 3,645.93 : x
2. Step 2: Convert to fraction form
   11,965.31/17,948.69 = 3,645.93/x
3. Step 3: Cross multiply
   11,965.31x = 17,948.69 × 3,645.93
4. Step 4: Simplify right side
   11,965.31x = 65,439,649.10
5. Step 5: Solve for x
   x = 65,439,649.10/11,965.31
6. Step 6: Final answer
   x = 5,469.12