Finding the Fourth Proportional to 35,978.74, 53,963.24 and 9,685.06

Step by Step Solution

1. Step 1: Write the proportion equation
   35,978.74 : 53,963.24 = 9,685.06 : x
2. Step 2: Convert to fraction form
   35,978.74/53,963.24 = 9,685.06/x
3. Step 3: Cross multiply
   35,978.74x = 53,963.24 × 9,685.06
4. Step 4: Simplify right side
   35,978.74x = 522,637,033.86
5. Step 5: Solve for x
   x = 522,637,033.86/35,978.74
6. Step 6: Final answer
   x = 14,526.27