Finding the Fourth Proportional to 21,343.68, 32,076 and 12,582.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,343.68 : 32,076 = 12,582.72 : x
2. Step 2: Convert to fraction form
   21,343.68/32,076 = 12,582.72/x
3. Step 3: Cross multiply
   21,343.68x = 32,076 × 12,582.72
4. Step 4: Simplify right side
   21,343.68x = 403,603,326.72
5. Step 5: Solve for x
   x = 403,603,326.72/21,343.68
6. Step 6: Final answer
   x = 18,909.73