Finding the Fourth Proportional to 11,678.37, 17,510.83 and 7,985.08

Step by Step Solution

1. Step 1: Write the proportion equation
   11,678.37 : 17,510.83 = 7,985.08 : x
2. Step 2: Convert to fraction form
   11,678.37/17,510.83 = 7,985.08/x
3. Step 3: Cross multiply
   11,678.37x = 17,510.83 × 7,985.08
4. Step 4: Simplify right side
   11,678.37x = 139,825,378.42
5. Step 5: Solve for x
   x = 139,825,378.42/11,678.37
6. Step 6: Final answer
   x = 11,973.02