Finding the Fourth Proportional to 13,274.69, 19,907.29 and 4,388.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,274.69 : 19,907.29 = 4,388.37 : x
2. Step 2: Convert to fraction form
   13,274.69/19,907.29 = 4,388.37/x
3. Step 3: Cross multiply
   13,274.69x = 19,907.29 × 4,388.37
4. Step 4: Simplify right side
   13,274.69x = 87,360,554.22
5. Step 5: Solve for x
   x = 87,360,554.22/13,274.69
6. Step 6: Final answer
   x = 6,580.99