Finding the Fourth Proportional to 9,978.54, 14,967.84 and 9,369.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.54 : 14,967.84 = 9,369.59 : x
2. Step 2: Convert to fraction form
   9,978.54/14,967.84 = 9,369.59/x
3. Step 3: Cross multiply
   9,978.54x = 14,967.84 × 9,369.59
4. Step 4: Simplify right side
   9,978.54x = 140,242,561.41
5. Step 5: Solve for x
   x = 140,242,561.41/9,978.54
6. Step 6: Final answer
   x = 14,054.42