Finding the Fourth Proportional to 13,696.25, 18,900.63 and 7,727.87

Step by Step Solution

1. Step 1: Write the proportion equation
   13,696.25 : 18,900.63 = 7,727.87 : x
2. Step 2: Convert to fraction form
   13,696.25/18,900.63 = 7,727.87/x
3. Step 3: Cross multiply
   13,696.25x = 18,900.63 × 7,727.87
4. Step 4: Simplify right side
   13,696.25x = 146,061,611.56
5. Step 5: Solve for x
   x = 146,061,611.56/13,696.25
6. Step 6: Final answer
   x = 10,664.35