Finding the Fourth Proportional to 23,451, 32,363.21 and 12,840.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,451 : 32,363.21 = 12,840.72 : x
2. Step 2: Convert to fraction form
   23,451/32,363.21 = 12,840.72/x
3. Step 3: Cross multiply
   23,451x = 32,363.21 × 12,840.72
4. Step 4: Simplify right side
   23,451x = 415,566,853.71
5. Step 5: Solve for x
   x = 415,566,853.71/23,451
6. Step 6: Final answer
   x = 17,720.65