Finding the Fourth Proportional to 23,758.47, 32,783.82 and 13,690.20

Step by Step Solution

1. Step 1: Write the proportion equation
   23,758.47 : 32,783.82 = 13,690.20 : x
2. Step 2: Convert to fraction form
   23,758.47/32,783.82 = 13,690.20/x
3. Step 3: Cross multiply
   23,758.47x = 32,783.82 × 13,690.20
4. Step 4: Simplify right side
   23,758.47x = 448,817,052.56
5. Step 5: Solve for x
   x = 448,817,052.56/23,758.47
6. Step 6: Final answer
   x = 18,890.82