Finding the Fourth Proportional to 19,819.55, 29,728.89 and 4,826.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,819.55 : 29,728.89 = 4,826.72 : x
2. Step 2: Convert to fraction form
   19,819.55/29,728.89 = 4,826.72/x
3. Step 3: Cross multiply
   19,819.55x = 29,728.89 × 4,826.72
4. Step 4: Simplify right side
   19,819.55x = 143,493,102.26
5. Step 5: Solve for x
   x = 143,493,102.26/19,819.55
6. Step 6: Final answer
   x = 7,239.98