Finding the Fourth Proportional to 17,784.42, 26,658.18 and 7,928.34

Step by Step Solution

1. Step 1: Write the proportion equation
   17,784.42 : 26,658.18 = 7,928.34 : x
2. Step 2: Convert to fraction form
   17,784.42/26,658.18 = 7,928.34/x
3. Step 3: Cross multiply
   17,784.42x = 26,658.18 × 7,928.34
4. Step 4: Simplify right side
   17,784.42x = 211,355,114.82
5. Step 5: Solve for x
   x = 211,355,114.82/17,784.42
6. Step 6: Final answer
   x = 11,884.28