Finding the Fourth Proportional to 13,379.31, 18,466.52 and 8,903.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,379.31 : 18,466.52 = 8,903.25 : x
2. Step 2: Convert to fraction form
   13,379.31/18,466.52 = 8,903.25/x
3. Step 3: Cross multiply
   13,379.31x = 18,466.52 × 8,903.25
4. Step 4: Simplify right side
   13,379.31x = 164,411,999.67
5. Step 5: Solve for x
   x = 164,411,999.67/13,379.31
6. Step 6: Final answer
   x = 12,288.53