Finding the Fourth Proportional to 23,819.49, 32,870.52 and 13,209.30

Step by Step Solution

1. Step 1: Write the proportion equation
   23,819.49 : 32,870.52 = 13,209.30 : x
2. Step 2: Convert to fraction form
   23,819.49/32,870.52 = 13,209.30/x
3. Step 3: Cross multiply
   23,819.49x = 32,870.52 × 13,209.30
4. Step 4: Simplify right side
   23,819.49x = 434,196,559.84
5. Step 5: Solve for x
   x = 434,196,559.84/23,819.49
6. Step 6: Final answer
   x = 18,228.63