Finding the Fourth Proportional to 12,146.37, 16,762.05 and 7,672.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,146.37 : 16,762.05 = 7,672.12 : x
2. Step 2: Convert to fraction form
   12,146.37/16,762.05 = 7,672.12/x
3. Step 3: Cross multiply
   12,146.37x = 16,762.05 × 7,672.12
4. Step 4: Simplify right side
   12,146.37x = 128,600,459.05
5. Step 5: Solve for x
   x = 128,600,459.05/12,146.37
6. Step 6: Final answer
   x = 10,587.57