Finding the Fourth Proportional to 21,784.32, 32,667.84 and 11,404.80

Step by Step Solution

1. Step 1: Write the proportion equation
   21,784.32 : 32,667.84 = 11,404.80 : x
2. Step 2: Convert to fraction form
   21,784.32/32,667.84 = 11,404.80/x
3. Step 3: Cross multiply
   21,784.32x = 32,667.84 × 11,404.80
4. Step 4: Simplify right side
   21,784.32x = 372,570,181.63
5. Step 5: Solve for x
   x = 372,570,181.63/21,784.32
6. Step 6: Final answer
   x = 17,102.68