Finding the Fourth Proportional to 12,949.07, 19,385.33 and 8,002.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,949.07 : 19,385.33 = 8,002.80 : x
2. Step 2: Convert to fraction form
   12,949.07/19,385.33 = 8,002.80/x
3. Step 3: Cross multiply
   12,949.07x = 19,385.33 × 8,002.80
4. Step 4: Simplify right side
   12,949.07x = 155,136,878.91
5. Step 5: Solve for x
   x = 155,136,878.91/12,949.07
6. Step 6: Final answer
   x = 11,980.55