Finding the Fourth Proportional to 12,789.17, 19,182.38 and 3,430.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,789.17 : 19,182.38 = 3,430.12 : x
2. Step 2: Convert to fraction form
   12,789.17/19,182.38 = 3,430.12/x
3. Step 3: Cross multiply
   12,789.17x = 19,182.38 × 3,430.12
4. Step 4: Simplify right side
   12,789.17x = 65,797,865.29
5. Step 5: Solve for x
   x = 65,797,865.29/12,789.17
6. Step 6: Final answer
   x = 5,144.81