Finding the Fourth Proportional to 9,513.72, 13,133.70 and 5,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,513.72 : 13,133.70 = 5,978.88 : x
2. Step 2: Convert to fraction form
   9,513.72/13,133.70 = 5,978.88/x
3. Step 3: Cross multiply
   9,513.72x = 13,133.70 × 5,978.88
4. Step 4: Simplify right side
   9,513.72x = 78,524,816.26
5. Step 5: Solve for x
   x = 78,524,816.26/9,513.72
6. Step 6: Final answer
   x = 8,253.85