Finding the Fourth Proportional to 23,521.30, 32,459.28 and 12,911.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,521.30 : 32,459.28 = 12,911.12 : x
2. Step 2: Convert to fraction form
   23,521.30/32,459.28 = 12,911.12/x
3. Step 3: Cross multiply
   23,521.30x = 32,459.28 × 12,911.12
4. Step 4: Simplify right side
   23,521.30x = 419,085,659.19
5. Step 5: Solve for x
   x = 419,085,659.19/23,521.30
6. Step 6: Final answer
   x = 17,817.28