Finding the Fourth Proportional to 13,443.16, 18,525.36 and 10,089.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,443.16 : 18,525.36 = 10,089.76 : x
2. Step 2: Convert to fraction form
   13,443.16/18,525.36 = 10,089.76/x
3. Step 3: Cross multiply
   13,443.16x = 18,525.36 × 10,089.76
4. Step 4: Simplify right side
   13,443.16x = 186,916,436.31
5. Step 5: Solve for x
   x = 186,916,436.31/13,443.16
6. Step 6: Final answer
   x = 13,904.20