Finding the Fourth Proportional to 9,591.31, 14,367.83 and 7,620.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,591.31 : 14,367.83 = 7,620.28 : x
2. Step 2: Convert to fraction form
   9,591.31/14,367.83 = 7,620.28/x
3. Step 3: Cross multiply
   9,591.31x = 14,367.83 × 7,620.28
4. Step 4: Simplify right side
   9,591.31x = 109,486,887.59
5. Step 5: Solve for x
   x = 109,486,887.59/9,591.31
6. Step 6: Final answer
   x = 11,415.22