Finding the Fourth Proportional to 12,347.72, 18,523.62 and 3,914.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,347.72 : 18,523.62 = 3,914.84 : x
2. Step 2: Convert to fraction form
   12,347.72/18,523.62 = 3,914.84/x
3. Step 3: Cross multiply
   12,347.72x = 18,523.62 × 3,914.84
4. Step 4: Simplify right side
   12,347.72x = 72,517,008.52
5. Step 5: Solve for x
   x = 72,517,008.52/12,347.72
6. Step 6: Final answer
   x = 5,872.91