Finding the Fourth Proportional to 35,419.05, 53,128.49 and 13,234.16

Step by Step Solution

1. Step 1: Write the proportion equation
   35,419.05 : 53,128.49 = 13,234.16 : x
2. Step 2: Convert to fraction form
   35,419.05/53,128.49 = 13,234.16/x
3. Step 3: Cross multiply
   35,419.05x = 53,128.49 × 13,234.16
4. Step 4: Simplify right side
   35,419.05x = 703,111,003.87
5. Step 5: Solve for x
   x = 703,111,003.87/35,419.05
6. Step 6: Final answer
   x = 19,851.21