Finding the Fourth Proportional to 11,567.59, 15,990.18 and 10,321.00

Step by Step Solution

1. Step 1: Write the proportion equation
   11,567.59 : 15,990.18 = 10,321.00 : x
2. Step 2: Convert to fraction form
   11,567.59/15,990.18 = 10,321.00/x
3. Step 3: Cross multiply
   11,567.59x = 15,990.18 × 10,321.00
4. Step 4: Simplify right side
   11,567.59x = 165,034,607.80
5. Step 5: Solve for x
   x = 165,034,607.80/11,567.59
6. Step 6: Final answer
   x = 14,266.99