Finding the Fourth Proportional to 9,979.79, 14,969.72 and 2,583.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,979.79 : 14,969.72 = 2,583.72 : x
2. Step 2: Convert to fraction form
   9,979.79/14,969.72 = 2,583.72/x
3. Step 3: Cross multiply
   9,979.79x = 14,969.72 × 2,583.72
4. Step 4: Simplify right side
   9,979.79x = 38,677,571.42
5. Step 5: Solve for x
   x = 38,677,571.42/9,979.79
6. Step 6: Final answer
   x = 3,875.59