Finding the Fourth Proportional to 9,985.28, 14,981.12 and 4,791.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,985.28 : 14,981.12 = 4,791.52 : x
2. Step 2: Convert to fraction form
   9,985.28/14,981.12 = 4,791.52/x
3. Step 3: Cross multiply
   9,985.28x = 14,981.12 × 4,791.52
4. Step 4: Simplify right side
   9,985.28x = 71,782,336.10
5. Step 5: Solve for x
   x = 71,782,336.10/9,985.28
6. Step 6: Final answer
   x = 7,188.82