Finding the Fourth Proportional to 10,155.77, 15,196.72 and 8,384.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,155.77 : 15,196.72 = 8,384.30 : x
2. Step 2: Convert to fraction form
   10,155.77/15,196.72 = 8,384.30/x
3. Step 3: Cross multiply
   10,155.77x = 15,196.72 × 8,384.30
4. Step 4: Simplify right side
   10,155.77x = 127,413,859.50
5. Step 5: Solve for x
   x = 127,413,859.50/10,155.77
6. Step 6: Final answer
   x = 12,545.96