Finding the Fourth Proportional to 65,983.86, 98,983.35 and 19,236.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,983.86 : 98,983.35 = 19,236.72 : x
2. Step 2: Convert to fraction form
   65,983.86/98,983.35 = 19,236.72/x
3. Step 3: Cross multiply
   65,983.86x = 98,983.35 × 19,236.72
4. Step 4: Simplify right side
   65,983.86x = 1,904,114,988.61
5. Step 5: Solve for x
   x = 1,904,114,988.61/65,983.86
6. Step 6: Final answer
   x = 28,857.28