Finding the Fourth Proportional to 13,013.49, 19,522.71 and 5,222.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,013.49 : 19,522.71 = 5,222.91 : x
2. Step 2: Convert to fraction form
   13,013.49/19,522.71 = 5,222.91/x
3. Step 3: Cross multiply
   13,013.49x = 19,522.71 × 5,222.91
4. Step 4: Simplify right side
   13,013.49x = 101,965,357.29
5. Step 5: Solve for x
   x = 101,965,357.29/13,013.49
6. Step 6: Final answer
   x = 7,835.36