Finding the Fourth Proportional to 12,109.79, 16,710.72 and 7,075.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109.79 : 16,710.72 = 7,075.43 : x
2. Step 2: Convert to fraction form
   12,109.79/16,710.72 = 7,075.43/x
3. Step 3: Cross multiply
   12,109.79x = 16,710.72 × 7,075.43
4. Step 4: Simplify right side
   12,109.79x = 118,235,446.06
5. Step 5: Solve for x
   x = 118,235,446.06/12,109.79
6. Step 6: Final answer
   x = 9,763.63