Finding the Fourth Proportional to 23,307.60, 32,164.55 and 12,697.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,307.60 : 32,164.55 = 12,697.31 : x
2. Step 2: Convert to fraction form
   23,307.60/32,164.55 = 12,697.31/x
3. Step 3: Cross multiply
   23,307.60x = 32,164.55 × 12,697.31
4. Step 4: Simplify right side
   23,307.60x = 408,403,262.36
5. Step 5: Solve for x
   x = 408,403,262.36/23,307.60
6. Step 6: Final answer
   x = 17,522.32