Finding the Fourth Proportional to 21,279.12, 32,077.98 and 19,851.92

Step by Step Solution

1. Step 1: Write the proportion equation
   21,279.12 : 32,077.98 = 19,851.92 : x
2. Step 2: Convert to fraction form
   21,279.12/32,077.98 = 19,851.92/x
3. Step 3: Cross multiply
   21,279.12x = 32,077.98 × 19,851.92
4. Step 4: Simplify right side
   21,279.12x = 636,809,492.72
5. Step 5: Solve for x
   x = 636,809,492.72/21,279.12
6. Step 6: Final answer
   x = 29,926.50