Finding the Fourth Proportional to 30,196.68, 45,368.86 and 28,518.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,196.68 : 45,368.86 = 28,518.12 : x
2. Step 2: Convert to fraction form
   30,196.68/45,368.86 = 28,518.12/x
3. Step 3: Cross multiply
   30,196.68x = 45,368.86 × 28,518.12
4. Step 4: Simplify right side
   30,196.68x = 1,293,834,593.74
5. Step 5: Solve for x
   x = 1,293,834,593.74/30,196.68
6. Step 6: Final answer
   x = 42,846.92