Finding the Fourth Proportional to 13,288.19, 19,927.89 and 4,401.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,288.19 : 19,927.89 = 4,401.47 : x
2. Step 2: Convert to fraction form
   13,288.19/19,927.89 = 4,401.47/x
3. Step 3: Cross multiply
   13,288.19x = 19,927.89 × 4,401.47
4. Step 4: Simplify right side
   13,288.19x = 87,712,059.82
5. Step 5: Solve for x
   x = 87,712,059.82/13,288.19
6. Step 6: Final answer
   x = 6,600.76