Finding the Fourth Proportional to 12,675.70, 17,492.50 and 7,086.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,675.70 : 17,492.50 = 7,086.70 : x
2. Step 2: Convert to fraction form
   12,675.70/17,492.50 = 7,086.70/x
3. Step 3: Cross multiply
   12,675.70x = 17,492.50 × 7,086.70
4. Step 4: Simplify right side
   12,675.70x = 123,964,064.88
5. Step 5: Solve for x
   x = 123,964,064.88/12,675.70
6. Step 6: Final answer
   x = 9,779.66