Finding the Fourth Proportional to 11,280.32, 16,922.64 and 3,487.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,280.32 : 16,922.64 = 3,487.76 : x
2. Step 2: Convert to fraction form
   11,280.32/16,922.64 = 3,487.76/x
3. Step 3: Cross multiply
   11,280.32x = 16,922.64 × 3,487.76
4. Step 4: Simplify right side
   11,280.32x = 59,022,106.89
5. Step 5: Solve for x
   x = 59,022,106.89/11,280.32
6. Step 6: Final answer
   x = 5,232.31