Finding the Fourth Proportional to 11,962.84, 17,910.24 and 7,807.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,962.84 : 17,910.24 = 7,807.56 : x
2. Step 2: Convert to fraction form
   11,962.84/17,910.24 = 7,807.56/x
3. Step 3: Cross multiply
   11,962.84x = 17,910.24 × 7,807.56
4. Step 4: Simplify right side
   11,962.84x = 139,835,273.41
5. Step 5: Solve for x
   x = 139,835,273.41/11,962.84
6. Step 6: Final answer
   x = 11,689.14