Finding the Fourth Proportional to 11,868.61, 17,804.49 and 4,371.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,868.61 : 17,804.49 = 4,371.15 : x
2. Step 2: Convert to fraction form
   11,868.61/17,804.49 = 4,371.15/x
3. Step 3: Cross multiply
   11,868.61x = 17,804.49 × 4,371.15
4. Step 4: Simplify right side
   11,868.61x = 77,826,096.46
5. Step 5: Solve for x
   x = 77,826,096.46/11,868.61
6. Step 6: Final answer
   x = 6,557.31