Finding the Fourth Proportional to 12,790.08, 17,641.86 and 8,001.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,790.08 : 17,641.86 = 8,001.72 : x
2. Step 2: Convert to fraction form
   12,790.08/17,641.86 = 8,001.72/x
3. Step 3: Cross multiply
   12,790.08x = 17,641.86 × 8,001.72
4. Step 4: Simplify right side
   12,790.08x = 141,165,224.00
5. Step 5: Solve for x
   x = 141,165,224.00/12,790.08
6. Step 6: Final answer
   x = 11,037.09