Finding the Fourth Proportional to 13,100.96, 18,061.20 and 9,564.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.96 : 18,061.20 = 9,564.32 : x
2. Step 2: Convert to fraction form
   13,100.96/18,061.20 = 9,564.32/x
3. Step 3: Cross multiply
   13,100.96x = 18,061.20 × 9,564.32
4. Step 4: Simplify right side
   13,100.96x = 172,743,096.38
5. Step 5: Solve for x
   x = 172,743,096.38/13,100.96
6. Step 6: Final answer
   x = 13,185.53