Finding the Fourth Proportional to 12,948.18, 19,392.57 and 8,009.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,948.18 : 19,392.57 = 8,009.34 : x
2. Step 2: Convert to fraction form
   12,948.18/19,392.57 = 8,009.34/x
3. Step 3: Cross multiply
   12,948.18x = 19,392.57 × 8,009.34
4. Step 4: Simplify right side
   12,948.18x = 155,321,686.60
5. Step 5: Solve for x
   x = 155,321,686.60/12,948.18
6. Step 6: Final answer
   x = 11,995.64