Finding the Fourth Proportional to 12,789.61, 19,186.86 and 4,022.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,789.61 : 19,186.86 = 4,022.17 : x
2. Step 2: Convert to fraction form
   12,789.61/19,186.86 = 4,022.17/x
3. Step 3: Cross multiply
   12,789.61x = 19,186.86 × 4,022.17
4. Step 4: Simplify right side
   12,789.61x = 77,172,812.69
5. Step 5: Solve for x
   x = 77,172,812.69/12,789.61
6. Step 6: Final answer
   x = 6,034.02