Finding the Fourth Proportional to 12,256.42, 18,384.48 and 3,491.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,256.42 : 18,384.48 = 3,491.40 : x
2. Step 2: Convert to fraction form
   12,256.42/18,384.48 = 3,491.40/x
3. Step 3: Cross multiply
   12,256.42x = 18,384.48 × 3,491.40
4. Step 4: Simplify right side
   12,256.42x = 64,187,573.47
5. Step 5: Solve for x
   x = 64,187,573.47/12,256.42
6. Step 6: Final answer
   x = 5,237.06