Finding the Fourth Proportional to 12,791.64, 17,649.72 and 7,485.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,791.64 : 17,649.72 = 7,485.60 : x
2. Step 2: Convert to fraction form
   12,791.64/17,649.72 = 7,485.60/x
3. Step 3: Cross multiply
   12,791.64x = 17,649.72 × 7,485.60
4. Step 4: Simplify right side
   12,791.64x = 132,118,744.03
5. Step 5: Solve for x
   x = 132,118,744.03/12,791.64
6. Step 6: Final answer
   x = 10,328.52