Finding the Fourth Proportional to 13,381,439.30, 20,162,116.00 and 12,103,471.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,381,439.30 : 20,162,116.00 = 12,103,471.54 : x
2. Step 2: Convert to fraction form
   13,381,439.30/20,162,116.00 = 12,103,471.54/x
3. Step 3: Cross multiply
   13,381,439.30x = 20,162,116.00 × 12,103,471.54
4. Step 4: Simplify right side
   13,381,439.30x = 244,031,597,131,661.28
5. Step 5: Solve for x
   x = 244,031,597,131,661.28/13,381,439.30
6. Step 6: Final answer
   x = 18,236,573.19