Finding the Fourth Proportional to 19,709.71, 29,553.72 and 13,476.76

Step by Step Solution

1. Step 1: Write the proportion equation
   19,709.71 : 29,553.72 = 13,476.76 : x
2. Step 2: Convert to fraction form
   19,709.71/29,553.72 = 13,476.76/x
3. Step 3: Cross multiply
   19,709.71x = 29,553.72 × 13,476.76
4. Step 4: Simplify right side
   19,709.71x = 398,288,391.55
5. Step 5: Solve for x
   x = 398,288,391.55/19,709.71
6. Step 6: Final answer
   x = 20,207.72