Finding the Fourth Proportional to 21,074.94, 31,612.20 and 8,592.03

Step by Step Solution

1. Step 1: Write the proportion equation
   21,074.94 : 31,612.20 = 8,592.03 : x
2. Step 2: Convert to fraction form
   21,074.94/31,612.20 = 8,592.03/x
3. Step 3: Cross multiply
   21,074.94x = 31,612.20 × 8,592.03
4. Step 4: Simplify right side
   21,074.94x = 271,612,970.77
5. Step 5: Solve for x
   x = 271,612,970.77/21,074.94
6. Step 6: Final answer
   x = 12,887.96