Finding the Fourth Proportional to 12,942.61, 17,859.56 and 7,566.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942.61 : 17,859.56 = 7,566.30 : x
2. Step 2: Convert to fraction form
   12,942.61/17,859.56 = 7,566.30/x
3. Step 3: Cross multiply
   12,942.61x = 17,859.56 × 7,566.30
4. Step 4: Simplify right side
   12,942.61x = 135,130,751.00
5. Step 5: Solve for x
   x = 135,130,751.00/12,942.61
6. Step 6: Final answer
   x = 10,440.77