Finding the Fourth Proportional to 9,383.64, 12,951.54 and 5,405.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,383.64 : 12,951.54 = 5,405.46 : x
2. Step 2: Convert to fraction form
   9,383.64/12,951.54 = 5,405.46/x
3. Step 3: Cross multiply
   9,383.64x = 12,951.54 × 5,405.46
4. Step 4: Simplify right side
   9,383.64x = 70,009,031.41
5. Step 5: Solve for x
   x = 70,009,031.41/9,383.64
6. Step 6: Final answer
   x = 7,460.75