Finding the Fourth Proportional to 12,487.17, 17,233.10 and 7,181.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,487.17 : 17,233.10 = 7,181.88 : x
2. Step 2: Convert to fraction form
   12,487.17/17,233.10 = 7,181.88/x
3. Step 3: Cross multiply
   12,487.17x = 17,233.10 × 7,181.88
4. Step 4: Simplify right side
   12,487.17x = 123,766,056.23
5. Step 5: Solve for x
   x = 123,766,056.23/12,487.17
6. Step 6: Final answer
   x = 9,911.46