Finding the Fourth Proportional to 13,938.48, 19,235.88 and 7,650.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,938.48 : 19,235.88 = 7,650.72 : x
2. Step 2: Convert to fraction form
   13,938.48/19,235.88 = 7,650.72/x
3. Step 3: Cross multiply
   13,938.48x = 19,235.88 × 7,650.72
4. Step 4: Simplify right side
   13,938.48x = 147,168,331.83
5. Step 5: Solve for x
   x = 147,168,331.83/13,938.48
6. Step 6: Final answer
   x = 10,558.42