Finding the Fourth Proportional to 13,792.29, 19,034.76 and 8,128.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,792.29 : 19,034.76 = 8,128.86 : x
2. Step 2: Convert to fraction form
   13,792.29/19,034.76 = 8,128.86/x
3. Step 3: Cross multiply
   13,792.29x = 19,034.76 × 8,128.86
4. Step 4: Simplify right side
   13,792.29x = 154,730,899.17
5. Step 5: Solve for x
   x = 154,730,899.17/13,792.29
6. Step 6: Final answer
   x = 11,218.65