Finding the Fourth Proportional to 21,366.83, 32,056.71 and 15,138.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,366.83 : 32,056.71 = 15,138.89 : x
2. Step 2: Convert to fraction form
   21,366.83/32,056.71 = 15,138.89/x
3. Step 3: Cross multiply
   21,366.83x = 32,056.71 × 15,138.89
4. Step 4: Simplify right side
   21,366.83x = 485,302,846.17
5. Step 5: Solve for x
   x = 485,302,846.17/21,366.83
6. Step 6: Final answer
   x = 22,712.91