Finding the Fourth Proportional to 12,266.95, 18,394.89 and 3,499.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,266.95 : 18,394.89 = 3,499.78 : x
2. Step 2: Convert to fraction form
   12,266.95/18,394.89 = 3,499.78/x
3. Step 3: Cross multiply
   12,266.95x = 18,394.89 × 3,499.78
4. Step 4: Simplify right side
   12,266.95x = 64,378,068.12
5. Step 5: Solve for x
   x = 64,378,068.12/12,266.95
6. Step 6: Final answer
   x = 5,248.09