Finding the Fourth Proportional to 12,261.96, 18,390.50 and 3,494.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,261.96 : 18,390.50 = 3,494.52 : x
2. Step 2: Convert to fraction form
   12,261.96/18,390.50 = 3,494.52/x
3. Step 3: Cross multiply
   12,261.96x = 18,390.50 × 3,494.52
4. Step 4: Simplify right side
   12,261.96x = 64,265,970.06
5. Step 5: Solve for x
   x = 64,265,970.06/12,261.96
6. Step 6: Final answer
   x = 5,241.08