Finding the Fourth Proportional to 17,748.72, 26,621.88 and 7,888.56

Step by Step Solution

1. Step 1: Write the proportion equation
   17,748.72 : 26,621.88 = 7,888.56 : x
2. Step 2: Convert to fraction form
   17,748.72/26,621.88 = 7,888.56/x
3. Step 3: Cross multiply
   17,748.72x = 26,621.88 × 7,888.56
4. Step 4: Simplify right side
   17,748.72x = 210,008,297.69
5. Step 5: Solve for x
   x = 210,008,297.69/17,748.72
6. Step 6: Final answer
   x = 11,832.31