Finding the Fourth Proportional to 13,989.89, 19,305.94 and 7,702.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,989.89 : 19,305.94 = 7,702.27 : x
2. Step 2: Convert to fraction form
   13,989.89/19,305.94 = 7,702.27/x
3. Step 3: Cross multiply
   13,989.89x = 19,305.94 × 7,702.27
4. Step 4: Simplify right side
   13,989.89x = 148,699,562.48
5. Step 5: Solve for x
   x = 148,699,562.48/13,989.89
6. Step 6: Final answer
   x = 10,629.07