Finding the Fourth Proportional to 11,801.39, 16,280.47 and 7,610.99

Step by Step Solution

1. Step 1: Write the proportion equation
   11,801.39 : 16,280.47 = 7,610.99 : x
2. Step 2: Convert to fraction form
   11,801.39/16,280.47 = 7,610.99/x
3. Step 3: Cross multiply
   11,801.39x = 16,280.47 × 7,610.99
4. Step 4: Simplify right side
   11,801.39x = 123,910,494.37
5. Step 5: Solve for x
   x = 123,910,494.37/11,801.39
6. Step 6: Final answer
   x = 10,499.65