Finding the Fourth Proportional to 35,428.72, 48,915.15 and 22,019.98

Step by Step Solution

1. Step 1: Write the proportion equation
   35,428.72 : 48,915.15 = 22,019.98 : x
2. Step 2: Convert to fraction form
   35,428.72/48,915.15 = 22,019.98/x
3. Step 3: Cross multiply
   35,428.72x = 48,915.15 × 22,019.98
4. Step 4: Simplify right side
   35,428.72x = 1,077,110,380.12
5. Step 5: Solve for x
   x = 1,077,110,380.12/35,428.72
6. Step 6: Final answer
   x = 30,402.19