Finding the Fourth Proportional to 51,196.88, 70,649.41 and 28,538.34

Step by Step Solution

1. Step 1: Write the proportion equation
   51,196.88 : 70,649.41 = 28,538.34 : x
2. Step 2: Convert to fraction form
   51,196.88/70,649.41 = 28,538.34/x
3. Step 3: Cross multiply
   51,196.88x = 70,649.41 × 28,538.34
4. Step 4: Simplify right side
   51,196.88x = 2,016,216,883.38
5. Step 5: Solve for x
   x = 2,016,216,883.38/51,196.88
6. Step 6: Final answer
   x = 39,381.64