Finding the Fourth Proportional to 51,008.41, 70,390.69 and 28,347

Step by Step Solution

1. Step 1: Write the proportion equation
   51,008.41 : 70,390.69 = 28,347 : x
2. Step 2: Convert to fraction form
   51,008.41/70,390.69 = 28,347/x
3. Step 3: Cross multiply
   51,008.41x = 70,390.69 × 28,347
4. Step 4: Simplify right side
   51,008.41x = 1,995,364,889.43
5. Step 5: Solve for x
   x = 1,995,364,889.43/51,008.41
6. Step 6: Final answer
   x = 39,118.35