Finding the Fourth Proportional to 21,402.57, 32,103.77 and 5,820.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,402.57 : 32,103.77 = 5,820.15 : x
2. Step 2: Convert to fraction form
   21,402.57/32,103.77 = 5,820.15/x
3. Step 3: Cross multiply
   21,402.57x = 32,103.77 × 5,820.15
4. Step 4: Simplify right side
   21,402.57x = 186,848,727.86
5. Step 5: Solve for x
   x = 186,848,727.86/21,402.57
6. Step 6: Final answer
   x = 8,730.20