Finding the Fourth Proportional to 12,763.10, 17,611.83 and 7,173.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,763.10 : 17,611.83 = 7,173.98 : x
2. Step 2: Convert to fraction form
   12,763.10/17,611.83 = 7,173.98/x
3. Step 3: Cross multiply
   12,763.10x = 17,611.83 × 7,173.98
4. Step 4: Simplify right side
   12,763.10x = 126,346,916.18
5. Step 5: Solve for x
   x = 126,346,916.18/12,763.10
6. Step 6: Final answer
   x = 9,899.39