Finding the Fourth Proportional to 9,393.84, 12,963.06 and 5,415.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,393.84 : 12,963.06 = 5,415.12 : x
2. Step 2: Convert to fraction form
   9,393.84/12,963.06 = 5,415.12/x
3. Step 3: Cross multiply
   9,393.84x = 12,963.06 × 5,415.12
4. Step 4: Simplify right side
   9,393.84x = 70,196,525.47
5. Step 5: Solve for x
   x = 70,196,525.47/9,393.84
6. Step 6: Final answer
   x = 7,472.61