Finding the Fourth Proportional to 21,566.91, 32,156.88 and 21,173.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,566.91 : 32,156.88 = 21,173.25 : x
2. Step 2: Convert to fraction form
   21,566.91/32,156.88 = 21,173.25/x
3. Step 3: Cross multiply
   21,566.91x = 32,156.88 × 21,173.25
4. Step 4: Simplify right side
   21,566.91x = 680,865,659.46
5. Step 5: Solve for x
   x = 680,865,659.46/21,566.91
6. Step 6: Final answer
   x = 31,569.92