Finding the Fourth Proportional to 12,670.83, 17,487.50 and 7,961.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,670.83 : 17,487.50 = 7,961.49 : x
2. Step 2: Convert to fraction form
   12,670.83/17,487.50 = 7,961.49/x
3. Step 3: Cross multiply
   12,670.83x = 17,487.50 × 7,961.49
4. Step 4: Simplify right side
   12,670.83x = 139,226,516.57
5. Step 5: Solve for x
   x = 139,226,516.57/12,670.83
6. Step 6: Final answer
   x = 10,987.96