Finding the Fourth Proportional to 13,007.32, 19,474.58 and 8,315.53

Step by Step Solution

1. Step 1: Write the proportion equation
   13,007.32 : 19,474.58 = 8,315.53 : x
2. Step 2: Convert to fraction form
   13,007.32/19,474.58 = 8,315.53/x
3. Step 3: Cross multiply
   13,007.32x = 19,474.58 × 8,315.53
4. Step 4: Simplify right side
   13,007.32x = 161,941,379.55
5. Step 5: Solve for x
   x = 161,941,379.55/13,007.32
6. Step 6: Final answer
   x = 12,450.02