Finding the Fourth Proportional to 13,036.40, 17,988.89 and 8,000.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,036.40 : 17,988.89 = 8,000.83 : x
2. Step 2: Convert to fraction form
   13,036.40/17,988.89 = 8,000.83/x
3. Step 3: Cross multiply
   13,036.40x = 17,988.89 × 8,000.83
4. Step 4: Simplify right side
   13,036.40x = 143,926,025.81
5. Step 5: Solve for x
   x = 143,926,025.81/13,036.40
6. Step 6: Final answer
   x = 11,040.32