Finding the Fourth Proportional to 35,487.60, 48,978.72 and 21,348.24

Step by Step Solution

1. Step 1: Write the proportion equation
   35,487.60 : 48,978.72 = 21,348.24 : x
2. Step 2: Convert to fraction form
   35,487.60/48,978.72 = 21,348.24/x
3. Step 3: Cross multiply
   35,487.60x = 48,978.72 × 21,348.24
4. Step 4: Simplify right side
   35,487.60x = 1,045,609,469.45
5. Step 5: Solve for x
   x = 1,045,609,469.45/35,487.60
6. Step 6: Final answer
   x = 29,464.08