Finding the Fourth Proportional to 14,180.50, 21,233.59 and 9,997.87

Step by Step Solution

1. Step 1: Write the proportion equation
   14,180.50 : 21,233.59 = 9,997.87 : x
2. Step 2: Convert to fraction form
   14,180.50/21,233.59 = 9,997.87/x
3. Step 3: Cross multiply
   14,180.50x = 21,233.59 × 9,997.87
4. Step 4: Simplify right side
   14,180.50x = 212,290,672.45
5. Step 5: Solve for x
   x = 212,290,672.45/14,180.50
6. Step 6: Final answer
   x = 14,970.61