Finding the Fourth Proportional to 23,569.68, 32,526.72 and 12,960

Step by Step Solution

1. Step 1: Write the proportion equation
   23,569.68 : 32,526.72 = 12,960 : x
2. Step 2: Convert to fraction form
   23,569.68/32,526.72 = 12,960/x
3. Step 3: Cross multiply
   23,569.68x = 32,526.72 × 12,960
4. Step 4: Simplify right side
   23,569.68x = 421,546,291.20
5. Step 5: Solve for x
   x = 421,546,291.20/23,569.68
6. Step 6: Final answer
   x = 17,885.11