Finding the Fourth Proportional to 9,770.40, 14,657.76 and 4,842.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,770.40 : 14,657.76 = 4,842.72 : x
2. Step 2: Convert to fraction form
   9,770.40/14,657.76 = 4,842.72/x
3. Step 3: Cross multiply
   9,770.40x = 14,657.76 × 4,842.72
4. Step 4: Simplify right side
   9,770.40x = 70,983,427.51
5. Step 5: Solve for x
   x = 70,983,427.51/9,770.40
6. Step 6: Final answer
   x = 7,265.15