Finding the Fourth Proportional to 12,798.47, 17,670.59 and 8,020.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,798.47 : 17,670.59 = 8,020.38 : x
2. Step 2: Convert to fraction form
   12,798.47/17,670.59 = 8,020.38/x
3. Step 3: Cross multiply
   12,798.47x = 17,670.59 × 8,020.38
4. Step 4: Simplify right side
   12,798.47x = 141,724,806.52
5. Step 5: Solve for x
   x = 141,724,806.52/12,798.47
6. Step 6: Final answer
   x = 11,073.58