Finding the Fourth Proportional to 9,997.88, 14,996.52 and 2,978.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,997.88 : 14,996.52 = 2,978.24 : x
2. Step 2: Convert to fraction form
   9,997.88/14,996.52 = 2,978.24/x
3. Step 3: Cross multiply
   9,997.88x = 14,996.52 × 2,978.24
4. Step 4: Simplify right side
   9,997.88x = 44,663,160.74
5. Step 5: Solve for x
   x = 44,663,160.74/9,997.88
6. Step 6: Final answer
   x = 4,467.27