Finding the Fourth Proportional to 12,675.20, 17,492.64 and 7,085.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,675.20 : 17,492.64 = 7,085.12 : x
2. Step 2: Convert to fraction form
   12,675.20/17,492.64 = 7,085.12/x
3. Step 3: Cross multiply
   12,675.20x = 17,492.64 × 7,085.12
4. Step 4: Simplify right side
   12,675.20x = 123,937,453.52
5. Step 5: Solve for x
   x = 123,937,453.52/12,675.20
6. Step 6: Final answer
   x = 9,777.95