Finding the Fourth Proportional to 9,979.34, 14,978.25 and 5,052.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,979.34 : 14,978.25 = 5,052.40 : x
2. Step 2: Convert to fraction form
   9,979.34/14,978.25 = 5,052.40/x
3. Step 3: Cross multiply
   9,979.34x = 14,978.25 × 5,052.40
4. Step 4: Simplify right side
   9,979.34x = 75,676,072.85
5. Step 5: Solve for x
   x = 75,676,072.85/9,979.34
6. Step 6: Final answer
   x = 7,583.28