Finding the Fourth Proportional to 13,089.59, 19,631.43 and 3,729.40

Step by Step Solution

1. Step 1: Write the proportion equation
   13,089.59 : 19,631.43 = 3,729.40 : x
2. Step 2: Convert to fraction form
   13,089.59/19,631.43 = 3,729.40/x
3. Step 3: Cross multiply
   13,089.59x = 19,631.43 × 3,729.40
4. Step 4: Simplify right side
   13,089.59x = 73,213,540.06
5. Step 5: Solve for x
   x = 73,213,540.06/13,089.59
6. Step 6: Final answer
   x = 5,593.26