Finding the Fourth Proportional to 11,271.30, 15,567.15 and 7,680.03

Step by Step Solution

1. Step 1: Write the proportion equation
   11,271.30 : 15,567.15 = 7,680.03 : x
2. Step 2: Convert to fraction form
   11,271.30/15,567.15 = 7,680.03/x
3. Step 3: Cross multiply
   11,271.30x = 15,567.15 × 7,680.03
4. Step 4: Simplify right side
   11,271.30x = 119,556,179.01
5. Step 5: Solve for x
   x = 119,556,179.01/11,271.30
6. Step 6: Final answer
   x = 10,607.13