Finding the Fourth Proportional to 30,478.86, 45,719.82 and 9,703.98

Step by Step Solution

1. Step 1: Write the proportion equation
   30,478.86 : 45,719.82 = 9,703.98 : x
2. Step 2: Convert to fraction form
   30,478.86/45,719.82 = 9,703.98/x
3. Step 3: Cross multiply
   30,478.86x = 45,719.82 × 9,703.98
4. Step 4: Simplify right side
   30,478.86x = 443,664,218.88
5. Step 5: Solve for x
   x = 443,664,218.88/30,478.86
6. Step 6: Final answer
   x = 14,556.46