Finding the Fourth Proportional to 21,064.89, 31,599.15 and 5,482.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,064.89 : 31,599.15 = 5,482.50 : x
2. Step 2: Convert to fraction form
   21,064.89/31,599.15 = 5,482.50/x
3. Step 3: Cross multiply
   21,064.89x = 31,599.15 × 5,482.50
4. Step 4: Simplify right side
   21,064.89x = 173,242,339.88
5. Step 5: Solve for x
   x = 173,242,339.88/21,064.89
6. Step 6: Final answer
   x = 8,224.22