Finding the Fourth Proportional to 12,427.84, 18,632.56 and 4,105.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,427.84 : 18,632.56 = 4,105.12 : x
2. Step 2: Convert to fraction form
   12,427.84/18,632.56 = 4,105.12/x
3. Step 3: Cross multiply
   12,427.84x = 18,632.56 × 4,105.12
4. Step 4: Simplify right side
   12,427.84x = 76,488,894.71
5. Step 5: Solve for x
   x = 76,488,894.71/12,427.84
6. Step 6: Final answer
   x = 6,154.64