Finding the Fourth Proportional to 12,075.61, 16,649.86 and 7,825.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,075.61 : 16,649.86 = 7,825.12 : x
2. Step 2: Convert to fraction form
   12,075.61/16,649.86 = 7,825.12/x
3. Step 3: Cross multiply
   12,075.61x = 16,649.86 × 7,825.12
4. Step 4: Simplify right side
   12,075.61x = 130,287,152.48
5. Step 5: Solve for x
   x = 130,287,152.48/12,075.61
6. Step 6: Final answer
   x = 10,789.28