Finding the Fourth Proportional to 9,892.61, 13,658.14 and 8,828.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,892.61 : 13,658.14 = 8,828.52 : x
2. Step 2: Convert to fraction form
   9,892.61/13,658.14 = 8,828.52/x
3. Step 3: Cross multiply
   9,892.61x = 13,658.14 × 8,828.52
4. Step 4: Simplify right side
   9,892.61x = 120,581,185.21
5. Step 5: Solve for x
   x = 120,581,185.21/9,892.61
6. Step 6: Final answer
   x = 12,189.02