Finding the Fourth Proportional to 13,664.58, 18,855.56 and 7,696.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,664.58 : 18,855.56 = 7,696.10 : x
2. Step 2: Convert to fraction form
   13,664.58/18,855.56 = 7,696.10/x
3. Step 3: Cross multiply
   13,664.58x = 18,855.56 × 7,696.10
4. Step 4: Simplify right side
   13,664.58x = 145,114,142.56
5. Step 5: Solve for x
   x = 145,114,142.56/13,664.58
6. Step 6: Final answer
   x = 10,619.73