Finding the Fourth Proportional to 21,748.64, 32,771.16 and 17,886.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,748.64 : 32,771.16 = 17,886.42 : x
2. Step 2: Convert to fraction form
   21,748.64/32,771.16 = 17,886.42/x
3. Step 3: Cross multiply
   21,748.64x = 32,771.16 × 17,886.42
4. Step 4: Simplify right side
   21,748.64x = 586,158,731.65
5. Step 5: Solve for x
   x = 586,158,731.65/21,748.64
6. Step 6: Final answer
   x = 26,951.52