Finding the Fourth Proportional to 9,659.91, 13,330.52 and 5,411.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,659.91 : 13,330.52 = 5,411.12 : x
2. Step 2: Convert to fraction form
   9,659.91/13,330.52 = 5,411.12/x
3. Step 3: Cross multiply
   9,659.91x = 13,330.52 × 5,411.12
4. Step 4: Simplify right side
   9,659.91x = 72,133,075.39
5. Step 5: Solve for x
   x = 72,133,075.39/9,659.91
6. Step 6: Final answer
   x = 7,467.26