Finding the Fourth Proportional to 23,522.40, 32,461.28 and 12,913

Step by Step Solution

1. Step 1: Write the proportion equation
   23,522.40 : 32,461.28 = 12,913 : x
2. Step 2: Convert to fraction form
   23,522.40/32,461.28 = 12,913/x
3. Step 3: Cross multiply
   23,522.40x = 32,461.28 × 12,913
4. Step 4: Simplify right side
   23,522.40x = 419,172,508.64
5. Step 5: Solve for x
   x = 419,172,508.64/23,522.40
6. Step 6: Final answer
   x = 17,820.14