Finding the Fourth Proportional to 21,722.51, 32,572.83 and 10,612.55

Step by Step Solution

1. Step 1: Write the proportion equation
   21,722.51 : 32,572.83 = 10,612.55 : x
2. Step 2: Convert to fraction form
   21,722.51/32,572.83 = 10,612.55/x
3. Step 3: Cross multiply
   21,722.51x = 32,572.83 × 10,612.55
4. Step 4: Simplify right side
   21,722.51x = 345,680,787.02
5. Step 5: Solve for x
   x = 345,680,787.02/21,722.51
6. Step 6: Final answer
   x = 15,913.48