Finding the Fourth Proportional to 12,837.98, 17,709.96 and 8,861.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,837.98 : 17,709.96 = 8,861.30 : x
2. Step 2: Convert to fraction form
   12,837.98/17,709.96 = 8,861.30/x
3. Step 3: Cross multiply
   12,837.98x = 17,709.96 × 8,861.30
4. Step 4: Simplify right side
   12,837.98x = 156,933,268.55
5. Step 5: Solve for x
   x = 156,933,268.55/12,837.98
6. Step 6: Final answer
   x = 12,224.14