Finding the Fourth Proportional to 9,978.95, 14,995.83 and 9,328.85

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.95 : 14,995.83 = 9,328.85 : x
2. Step 2: Convert to fraction form
   9,978.95/14,995.83 = 9,328.85/x
3. Step 3: Cross multiply
   9,978.95x = 14,995.83 × 9,328.85
4. Step 4: Simplify right side
   9,978.95x = 139,893,848.70
5. Step 5: Solve for x
   x = 139,893,848.70/9,978.95
6. Step 6: Final answer
   x = 14,018.89