Finding the Fourth Proportional to 13,694.01, 18,897.72 and 7,406.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,694.01 : 18,897.72 = 7,406.37 : x
2. Step 2: Convert to fraction form
   13,694.01/18,897.72 = 7,406.37/x
3. Step 3: Cross multiply
   13,694.01x = 18,897.72 × 7,406.37
4. Step 4: Simplify right side
   13,694.01x = 139,963,506.48
5. Step 5: Solve for x
   x = 139,963,506.48/13,694.01
6. Step 6: Final answer
   x = 10,220.78