Finding the Fourth Proportional to 10,290.04, 14,227.86 and 9,817

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290.04 : 14,227.86 = 9,817 : x
2. Step 2: Convert to fraction form
   10,290.04/14,227.86 = 9,817/x
3. Step 3: Cross multiply
   10,290.04x = 14,227.86 × 9,817
4. Step 4: Simplify right side
   10,290.04x = 139,674,901.62
5. Step 5: Solve for x
   x = 139,674,901.62/10,290.04
6. Step 6: Final answer
   x = 13,573.80