Finding the Fourth Proportional to 10,998.64, 16,498.14 and 3,603.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,998.64 : 16,498.14 = 3,603.88 : x
2. Step 2: Convert to fraction form
   10,998.64/16,498.14 = 3,603.88/x
3. Step 3: Cross multiply
   10,998.64x = 16,498.14 × 3,603.88
4. Step 4: Simplify right side
   10,998.64x = 59,457,316.78
5. Step 5: Solve for x
   x = 59,457,316.78/10,998.64
6. Step 6: Final answer
   x = 5,405.88