Finding the Fourth Proportional to 13,401.69, 20,102.55 and 4,631.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,401.69 : 20,102.55 = 4,631.82 : x
2. Step 2: Convert to fraction form
   13,401.69/20,102.55 = 4,631.82/x
3. Step 3: Cross multiply
   13,401.69x = 20,102.55 × 4,631.82
4. Step 4: Simplify right side
   13,401.69x = 93,111,393.14
5. Step 5: Solve for x
   x = 93,111,393.14/13,401.69
6. Step 6: Final answer
   x = 6,947.74