Finding the Fourth Proportional to 13,089.60, 19,634.49 and 3,729.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,089.60 : 19,634.49 = 3,729.72 : x
2. Step 2: Convert to fraction form
   13,089.60/19,634.49 = 3,729.72/x
3. Step 3: Cross multiply
   13,089.60x = 19,634.49 × 3,729.72
4. Step 4: Simplify right side
   13,089.60x = 73,231,150.04
5. Step 5: Solve for x
   x = 73,231,150.04/13,089.60
6. Step 6: Final answer
   x = 5,594.61