Finding the Fourth Proportional to 11,017.31, 16,522.45 and 3,620.05

Step by Step Solution

1. Step 1: Write the proportion equation
   11,017.31 : 16,522.45 = 3,620.05 : x
2. Step 2: Convert to fraction form
   11,017.31/16,522.45 = 3,620.05/x
3. Step 3: Cross multiply
   11,017.31x = 16,522.45 × 3,620.05
4. Step 4: Simplify right side
   11,017.31x = 59,812,095.12
5. Step 5: Solve for x
   x = 59,812,095.12/11,017.31
6. Step 6: Final answer
   x = 5,428.92