Finding the Fourth Proportional to 13,085.50, 18,032.88 and 8,361.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,085.50 : 18,032.88 = 8,361.58 : x
2. Step 2: Convert to fraction form
   13,085.50/18,032.88 = 8,361.58/x
3. Step 3: Cross multiply
   13,085.50x = 18,032.88 × 8,361.58
4. Step 4: Simplify right side
   13,085.50x = 150,783,368.75
5. Step 5: Solve for x
   x = 150,783,368.75/13,085.50
6. Step 6: Final answer
   x = 11,522.94