Finding the Fourth Proportional to 9,981.76, 14,972.72 and 4,771.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.76 : 14,972.72 = 4,771.84 : x
2. Step 2: Convert to fraction form
   9,981.76/14,972.72 = 4,771.84/x
3. Step 3: Cross multiply
   9,981.76x = 14,972.72 × 4,771.84
4. Step 4: Simplify right side
   9,981.76x = 71,447,424.20
5. Step 5: Solve for x
   x = 71,447,424.20/9,981.76
6. Step 6: Final answer
   x = 7,157.80