Finding the Fourth Proportional to 12,046.12, 17,987.19 and 10,628.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,046.12 : 17,987.19 = 10,628.72 : x
2. Step 2: Convert to fraction form
   12,046.12/17,987.19 = 10,628.72/x
3. Step 3: Cross multiply
   12,046.12x = 17,987.19 × 10,628.72
4. Step 4: Simplify right side
   12,046.12x = 191,180,773.65
5. Step 5: Solve for x
   x = 191,180,773.65/12,046.12
6. Step 6: Final answer
   x = 15,870.74