Finding the Fourth Proportional to 13,089.40, 19,631.16 and 3,729.22

Step by Step Solution

1. Step 1: Write the proportion equation
   13,089.40 : 19,631.16 = 3,729.22 : x
2. Step 2: Convert to fraction form
   13,089.40/19,631.16 = 3,729.22/x
3. Step 3: Cross multiply
   13,089.40x = 19,631.16 × 3,729.22
4. Step 4: Simplify right side
   13,089.40x = 73,208,914.50
5. Step 5: Solve for x
   x = 73,208,914.50/13,089.40
6. Step 6: Final answer
   x = 5,592.99