Finding the Fourth Proportional to 13,635.22, 20,456.52 and 4,870.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,635.22 : 20,456.52 = 4,870.84 : x
2. Step 2: Convert to fraction form
   13,635.22/20,456.52 = 4,870.84/x
3. Step 3: Cross multiply
   13,635.22x = 20,456.52 × 4,870.84
4. Step 4: Simplify right side
   13,635.22x = 99,640,435.88
5. Step 5: Solve for x
   x = 99,640,435.88/13,635.22
6. Step 6: Final answer
   x = 7,307.58