Finding the Fourth Proportional to 9,892.05, 13,657.40 and 8,828.00

Step by Step Solution

1. Step 1: Write the proportion equation
   9,892.05 : 13,657.40 = 8,828.00 : x
2. Step 2: Convert to fraction form
   9,892.05/13,657.40 = 8,828.00/x
3. Step 3: Cross multiply
   9,892.05x = 13,657.40 × 8,828.00
4. Step 4: Simplify right side
   9,892.05x = 120,567,414.77
5. Step 5: Solve for x
   x = 120,567,414.77/9,892.05
6. Step 6: Final answer
   x = 12,188.31