Finding the Fourth Proportional to 12,389.78, 17,096.76 and 7,353.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,389.78 : 17,096.76 = 7,353.14 : x
2. Step 2: Convert to fraction form
   12,389.78/17,096.76 = 7,353.14/x
3. Step 3: Cross multiply
   12,389.78x = 17,096.76 × 7,353.14
4. Step 4: Simplify right side
   12,389.78x = 125,714,784.34
5. Step 5: Solve for x
   x = 125,714,784.34/12,389.78
6. Step 6: Final answer
   x = 10,146.65