Finding the Fourth Proportional to 13,180.71, 19,751.49 and 12,854.73

Step by Step Solution

1. Step 1: Write the proportion equation
   13,180.71 : 19,751.49 = 12,854.73 : x
2. Step 2: Convert to fraction form
   13,180.71/19,751.49 = 12,854.73/x
3. Step 3: Cross multiply
   13,180.71x = 19,751.49 × 12,854.73
4. Step 4: Simplify right side
   13,180.71x = 253,900,071.05
5. Step 5: Solve for x
   x = 253,900,071.05/13,180.71
6. Step 6: Final answer
   x = 19,263.00