Finding the Fourth Proportional to 13,696.04, 18,900.60 and 7,727.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,696.04 : 18,900.60 = 7,727.96 : x
2. Step 2: Convert to fraction form
   13,696.04/18,900.60 = 7,727.96/x
3. Step 3: Cross multiply
   13,696.04x = 18,900.60 × 7,727.96
4. Step 4: Simplify right side
   13,696.04x = 146,063,080.78
5. Step 5: Solve for x
   x = 146,063,080.78/13,696.04
6. Step 6: Final answer
   x = 10,664.62