Finding the Fourth Proportional to 23,521.90, 32,460.59 and 12,912.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,521.90 : 32,460.59 = 12,912.50 : x
2. Step 2: Convert to fraction form
   23,521.90/32,460.59 = 12,912.50/x
3. Step 3: Cross multiply
   23,521.90x = 32,460.59 × 12,912.50
4. Step 4: Simplify right side
   23,521.90x = 419,147,368.38
5. Step 5: Solve for x
   x = 419,147,368.38/23,521.90
6. Step 6: Final answer
   x = 17,819.45