Finding the Fourth Proportional to 12,140, 18,212.88 and 3,932

Step by Step Solution

1. Step 1: Write the proportion equation
   12,140 : 18,212.88 = 3,932 : x
2. Step 2: Convert to fraction form
   12,140/18,212.88 = 3,932/x
3. Step 3: Cross multiply
   12,140x = 18,212.88 × 3,932
4. Step 4: Simplify right side
   12,140x = 71,613,044.16
5. Step 5: Solve for x
   x = 71,613,044.16/12,140
6. Step 6: Final answer
   x = 5,898.93