Finding the Fourth Proportional to 13,022.39, 19,490.96 and 7,084.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,022.39 : 19,490.96 = 7,084.45 : x
2. Step 2: Convert to fraction form
   13,022.39/19,490.96 = 7,084.45/x
3. Step 3: Cross multiply
   13,022.39x = 19,490.96 × 7,084.45
4. Step 4: Simplify right side
   13,022.39x = 138,082,664.01
5. Step 5: Solve for x
   x = 138,082,664.01/13,022.39
6. Step 6: Final answer
   x = 10,603.48