Finding the Fourth Proportional to 21,577.88, 32,370.52 and 9,892.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,577.88 : 32,370.52 = 9,892.10 : x
2. Step 2: Convert to fraction form
   21,577.88/32,370.52 = 9,892.10/x
3. Step 3: Cross multiply
   21,577.88x = 32,370.52 × 9,892.10
4. Step 4: Simplify right side
   21,577.88x = 320,212,420.89
5. Step 5: Solve for x
   x = 320,212,420.89/21,577.88
6. Step 6: Final answer
   x = 14,839.85