Finding the Fourth Proportional to 35,333.48, 52,998.42 and 13,138.28

Step by Step Solution

1. Step 1: Write the proportion equation
   35,333.48 : 52,998.42 = 13,138.28 : x
2. Step 2: Convert to fraction form
   35,333.48/52,998.42 = 13,138.28/x
3. Step 3: Cross multiply
   35,333.48x = 52,998.42 × 13,138.28
4. Step 4: Simplify right side
   35,333.48x = 696,308,081.52
5. Step 5: Solve for x
   x = 696,308,081.52/35,333.48
6. Step 6: Final answer
   x = 19,706.75