Finding the Fourth Proportional to 12,570.24, 17,384.52 and 10,995.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,570.24 : 17,384.52 = 10,995.60 : x
2. Step 2: Convert to fraction form
   12,570.24/17,384.52 = 10,995.60/x
3. Step 3: Cross multiply
   12,570.24x = 17,384.52 × 10,995.60
4. Step 4: Simplify right side
   12,570.24x = 191,153,228.11
5. Step 5: Solve for x
   x = 191,153,228.11/12,570.24
6. Step 6: Final answer
   x = 15,206.81