Finding the Fourth Proportional to 12,323.59, 17,008.31 and 7,018.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,323.59 : 17,008.31 = 7,018.90 : x
2. Step 2: Convert to fraction form
   12,323.59/17,008.31 = 7,018.90/x
3. Step 3: Cross multiply
   12,323.59x = 17,008.31 × 7,018.90
4. Step 4: Simplify right side
   12,323.59x = 119,379,602.09
5. Step 5: Solve for x
   x = 119,379,602.09/12,323.59
6. Step 6: Final answer
   x = 9,687.08