Finding the Fourth Proportional to 12,686.65, 19,032.78 and 3,801.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,686.65 : 19,032.78 = 3,801.62 : x
2. Step 2: Convert to fraction form
   12,686.65/19,032.78 = 3,801.62/x
3. Step 3: Cross multiply
   12,686.65x = 19,032.78 × 3,801.62
4. Step 4: Simplify right side
   12,686.65x = 72,355,397.10
5. Step 5: Solve for x
   x = 72,355,397.10/12,686.65
6. Step 6: Final answer
   x = 5,703.27