Finding the Fourth Proportional to 19,185.72, 26,475.94 and 10,688.55

Step by Step Solution

1. Step 1: Write the proportion equation
   19,185.72 : 26,475.94 = 10,688.55 : x
2. Step 2: Convert to fraction form
   19,185.72/26,475.94 = 10,688.55/x
3. Step 3: Cross multiply
   19,185.72x = 26,475.94 × 10,688.55
4. Step 4: Simplify right side
   19,185.72x = 282,989,282.48
5. Step 5: Solve for x
   x = 282,989,282.48/19,185.72
6. Step 6: Final answer
   x = 14,749.99