Finding the Fourth Proportional to 35,978.72, 53,971.24 and 9,682.88

Step by Step Solution

1. Step 1: Write the proportion equation
   35,978.72 : 53,971.24 = 9,682.88 : x
2. Step 2: Convert to fraction form
   35,978.72/53,971.24 = 9,682.88/x
3. Step 3: Cross multiply
   35,978.72x = 53,971.24 × 9,682.88
4. Step 4: Simplify right side
   35,978.72x = 522,597,040.37
5. Step 5: Solve for x
   x = 522,597,040.37/35,978.72
6. Step 6: Final answer
   x = 14,525.17