Finding the Fourth Proportional to 19,449.76, 29,105.52 and 14,242.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,449.76 : 29,105.52 = 14,242.72 : x
2. Step 2: Convert to fraction form
   19,449.76/29,105.52 = 14,242.72/x
3. Step 3: Cross multiply
   19,449.76x = 29,105.52 × 14,242.72
4. Step 4: Simplify right side
   19,449.76x = 414,541,771.81
5. Step 5: Solve for x
   x = 414,541,771.81/19,449.76
6. Step 6: Final answer
   x = 21,313.46