Finding the Fourth Proportional to 13,793.59, 19,013.02 and 9,315.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,793.59 : 19,013.02 = 9,315.91 : x
2. Step 2: Convert to fraction form
   13,793.59/19,013.02 = 9,315.91/x
3. Step 3: Cross multiply
   13,793.59x = 19,013.02 × 9,315.91
4. Step 4: Simplify right side
   13,793.59x = 177,123,583.15
5. Step 5: Solve for x
   x = 177,123,583.15/13,793.59
6. Step 6: Final answer
   x = 12,841.01