Finding the Fourth Proportional to 12,372.56, 17,064.18 and 10,877.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,372.56 : 17,064.18 = 10,877.28 : x
2. Step 2: Convert to fraction form
   12,372.56/17,064.18 = 10,877.28/x
3. Step 3: Cross multiply
   12,372.56x = 17,064.18 × 10,877.28
4. Step 4: Simplify right side
   12,372.56x = 185,611,863.83
5. Step 5: Solve for x
   x = 185,611,863.83/12,372.56
6. Step 6: Final answer
   x = 15,001.90