Finding the Fourth Proportional to 12,253.21, 18,379.93 and 3,488.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,253.21 : 18,379.93 = 3,488.12 : x
2. Step 2: Convert to fraction form
   12,253.21/18,379.93 = 3,488.12/x
3. Step 3: Cross multiply
   12,253.21x = 18,379.93 × 3,488.12
4. Step 4: Simplify right side
   12,253.21x = 64,111,429.94
5. Step 5: Solve for x
   x = 64,111,429.94/12,253.21
6. Step 6: Final answer
   x = 5,232.22