Finding the Fourth Proportional to 19,819.56, 29,729.98 and 7,342.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,819.56 : 29,729.98 = 7,342.72 : x
2. Step 2: Convert to fraction form
   19,819.56/29,729.98 = 7,342.72/x
3. Step 3: Cross multiply
   19,819.56x = 29,729.98 × 7,342.72
4. Step 4: Simplify right side
   19,819.56x = 218,298,918.75
5. Step 5: Solve for x
   x = 218,298,918.75/19,819.56
6. Step 6: Final answer
   x = 11,014.32