Finding the Fourth Proportional to 30,651, 42,303.28 and 28,649.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,651 : 42,303.28 = 28,649.88 : x
2. Step 2: Convert to fraction form
   30,651/42,303.28 = 28,649.88/x
3. Step 3: Cross multiply
   30,651x = 42,303.28 × 28,649.88
4. Step 4: Simplify right side
   30,651x = 1,211,983,895.61
5. Step 5: Solve for x
   x = 1,211,983,895.61/30,651
6. Step 6: Final answer
   x = 39,541.41