Finding the Fourth Proportional to 10,443.09, 15,672.17 and 4,118.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,443.09 : 15,672.17 = 4,118.91 : x
2. Step 2: Convert to fraction form
   10,443.09/15,672.17 = 4,118.91/x
3. Step 3: Cross multiply
   10,443.09x = 15,672.17 × 4,118.91
4. Step 4: Simplify right side
   10,443.09x = 64,552,237.14
5. Step 5: Solve for x
   x = 64,552,237.14/10,443.09
6. Step 6: Final answer
   x = 6,181.33