Finding the Fourth Proportional to 11,600.86, 17,402.34 and 3,280.99

Step by Step Solution

1. Step 1: Write the proportion equation
   11,600.86 : 17,402.34 = 3,280.99 : x
2. Step 2: Convert to fraction form
   11,600.86/17,402.34 = 3,280.99/x
3. Step 3: Cross multiply
   11,600.86x = 17,402.34 × 3,280.99
4. Step 4: Simplify right side
   11,600.86x = 57,096,903.52
5. Step 5: Solve for x
   x = 57,096,903.52/11,600.86
6. Step 6: Final answer
   x = 4,921.78