Finding the Fourth Proportional to 12,740.67, 17,577.89 and 7,702.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,740.67 : 17,577.89 = 7,702.98 : x
2. Step 2: Convert to fraction form
   12,740.67/17,577.89 = 7,702.98/x
3. Step 3: Cross multiply
   12,740.67x = 17,577.89 × 7,702.98
4. Step 4: Simplify right side
   12,740.67x = 135,402,096.60
5. Step 5: Solve for x
   x = 135,402,096.60/12,740.67
6. Step 6: Final answer
   x = 10,627.55