Finding the Fourth Proportional to 9,972.52, 13,762.04 and 5,783.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,972.52 : 13,762.04 = 5,783.20 : x
2. Step 2: Convert to fraction form
   9,972.52/13,762.04 = 5,783.20/x
3. Step 3: Cross multiply
   9,972.52x = 13,762.04 × 5,783.20
4. Step 4: Simplify right side
   9,972.52x = 79,588,629.73
5. Step 5: Solve for x
   x = 79,588,629.73/9,972.52
6. Step 6: Final answer
   x = 7,980.79