Finding the Fourth Proportional to 12,707.04, 19,057.68 and 4,386.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,707.04 : 19,057.68 = 4,386.72 : x
2. Step 2: Convert to fraction form
   12,707.04/19,057.68 = 4,386.72/x
3. Step 3: Cross multiply
   12,707.04x = 19,057.68 × 4,386.72
4. Step 4: Simplify right side
   12,707.04x = 83,600,706.01
5. Step 5: Solve for x
   x = 83,600,706.01/12,707.04
6. Step 6: Final answer
   x = 6,579.09