Finding the Fourth Proportional to 21,820.96, 32,734.40 and 8,674.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,820.96 : 32,734.40 = 8,674.72 : x
2. Step 2: Convert to fraction form
   21,820.96/32,734.40 = 8,674.72/x
3. Step 3: Cross multiply
   21,820.96x = 32,734.40 × 8,674.72
4. Step 4: Simplify right side
   21,820.96x = 283,961,754.37
5. Step 5: Solve for x
   x = 283,961,754.37/21,820.96
6. Step 6: Final answer
   x = 13,013.26