Finding the Fourth Proportional to 15,522.56, 21,419.88 and 10,817

Step by Step Solution

1. Step 1: Write the proportion equation
   15,522.56 : 21,419.88 = 10,817 : x
2. Step 2: Convert to fraction form
   15,522.56/21,419.88 = 10,817/x
3. Step 3: Cross multiply
   15,522.56x = 21,419.88 × 10,817
4. Step 4: Simplify right side
   15,522.56x = 231,698,841.96
5. Step 5: Solve for x
   x = 231,698,841.96/15,522.56
6. Step 6: Final answer
   x = 14,926.59