Finding the Fourth Proportional to 12,300.82, 18,437.30 and 10,817.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,300.82 : 18,437.30 = 10,817.18 : x
2. Step 2: Convert to fraction form
   12,300.82/18,437.30 = 10,817.18/x
3. Step 3: Cross multiply
   12,300.82x = 18,437.30 × 10,817.18
4. Step 4: Simplify right side
   12,300.82x = 199,439,592.81
5. Step 5: Solve for x
   x = 199,439,592.81/12,300.82
6. Step 6: Final answer
   x = 16,213.52