Finding the Fourth Proportional to 10,590.41, 15,860.57 and 9,196.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,590.41 : 15,860.57 = 9,196.17 : x
2. Step 2: Convert to fraction form
   10,590.41/15,860.57 = 9,196.17/x
3. Step 3: Cross multiply
   10,590.41x = 15,860.57 × 9,196.17
4. Step 4: Simplify right side
   10,590.41x = 145,856,443.71
5. Step 5: Solve for x
   x = 145,856,443.71/10,590.41
6. Step 6: Final answer
   x = 13,772.50