Finding the Fourth Proportional to 21,592.48, 32,362.72 and 9,889.60

Step by Step Solution

1. Step 1: Write the proportion equation
   21,592.48 : 32,362.72 = 9,889.60 : x
2. Step 2: Convert to fraction form
   21,592.48/32,362.72 = 9,889.60/x
3. Step 3: Cross multiply
   21,592.48x = 32,362.72 × 9,889.60
4. Step 4: Simplify right side
   21,592.48x = 320,054,355.71
5. Step 5: Solve for x
   x = 320,054,355.71/21,592.48
6. Step 6: Final answer
   x = 14,822.49