Finding the Fourth Proportional to 12,261.93, 18,390.83 and 3,494.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,261.93 : 18,390.83 = 3,494.76 : x
2. Step 2: Convert to fraction form
   12,261.93/18,390.83 = 3,494.76/x
3. Step 3: Cross multiply
   12,261.93x = 18,390.83 × 3,494.76
4. Step 4: Simplify right side
   12,261.93x = 64,271,537.05
5. Step 5: Solve for x
   x = 64,271,537.05/12,261.93
6. Step 6: Final answer
   x = 5,241.55