Finding the Fourth Proportional to 9,892.18, 13,636.78 and 7,530.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,892.18 : 13,636.78 = 7,530.22 : x
2. Step 2: Convert to fraction form
   9,892.18/13,636.78 = 7,530.22/x
3. Step 3: Cross multiply
   9,892.18x = 13,636.78 × 7,530.22
4. Step 4: Simplify right side
   9,892.18x = 102,687,953.49
5. Step 5: Solve for x
   x = 102,687,953.49/9,892.18
6. Step 6: Final answer
   x = 10,380.72