Finding the Fourth Proportional to 9,404.32, 12,977.64 and 5,212.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,404.32 : 12,977.64 = 5,212.48 : x
2. Step 2: Convert to fraction form
   9,404.32/12,977.64 = 5,212.48/x
3. Step 3: Cross multiply
   9,404.32x = 12,977.64 × 5,212.48
4. Step 4: Simplify right side
   9,404.32x = 67,645,688.95
5. Step 5: Solve for x
   x = 67,645,688.95/9,404.32
6. Step 6: Final answer
   x = 7,193.04