Finding the Fourth Proportional to 16,818.30, 25,109.19 and 12,848.76

Step by Step Solution

1. Step 1: Write the proportion equation
   16,818.30 : 25,109.19 = 12,848.76 : x
2. Step 2: Convert to fraction form
   16,818.30/25,109.19 = 12,848.76/x
3. Step 3: Cross multiply
   16,818.30x = 25,109.19 × 12,848.76
4. Step 4: Simplify right side
   16,818.30x = 322,621,956.10
5. Step 5: Solve for x
   x = 322,621,956.10/16,818.30
6. Step 6: Final answer
   x = 19,182.79