Finding the Fourth Proportional to 35,404.85, 48,841.61 and 21,991.70

Step by Step Solution

1. Step 1: Write the proportion equation
   35,404.85 : 48,841.61 = 21,991.70 : x
2. Step 2: Convert to fraction form
   35,404.85/48,841.61 = 21,991.70/x
3. Step 3: Cross multiply
   35,404.85x = 48,841.61 × 21,991.70
4. Step 4: Simplify right side
   35,404.85x = 1,074,109,680.47
5. Step 5: Solve for x
   x = 1,074,109,680.47/35,404.85
6. Step 6: Final answer
   x = 30,337.93