Finding the Fourth Proportional to 16,068.81, 24,061.30 and 12,931.68

Step by Step Solution

1. Step 1: Write the proportion equation
   16,068.81 : 24,061.30 = 12,931.68 : x
2. Step 2: Convert to fraction form
   16,068.81/24,061.30 = 12,931.68/x
3. Step 3: Cross multiply
   16,068.81x = 24,061.30 × 12,931.68
4. Step 4: Simplify right side
   16,068.81x = 311,152,999.65
5. Step 5: Solve for x
   x = 311,152,999.65/16,068.81
6. Step 6: Final answer
   x = 19,363.79