Finding the Fourth Proportional to 12,389.48, 17,100.76 and 7,671.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,389.48 : 17,100.76 = 7,671.08 : x
2. Step 2: Convert to fraction form
   12,389.48/17,100.76 = 7,671.08/x
3. Step 3: Cross multiply
   12,389.48x = 17,100.76 × 7,671.08
4. Step 4: Simplify right side
   12,389.48x = 131,181,298.02
5. Step 5: Solve for x
   x = 131,181,298.02/12,389.48
6. Step 6: Final answer
   x = 10,588.12