Finding the Fourth Proportional to 13,046.03, 17,978.66 and 12,806.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,046.03 : 17,978.66 = 12,806.10 : x
2. Step 2: Convert to fraction form
   13,046.03/17,978.66 = 12,806.10/x
3. Step 3: Cross multiply
   13,046.03x = 17,978.66 × 12,806.10
4. Step 4: Simplify right side
   13,046.03x = 230,236,517.83
5. Step 5: Solve for x
   x = 230,236,517.83/13,046.03
6. Step 6: Final answer
   x = 17,648.01