Finding the Fourth Proportional to 10,915.94, 15,070.38 and 7,384.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,915.94 : 15,070.38 = 7,384.34 : x
2. Step 2: Convert to fraction form
   10,915.94/15,070.38 = 7,384.34/x
3. Step 3: Cross multiply
   10,915.94x = 15,070.38 × 7,384.34
4. Step 4: Simplify right side
   10,915.94x = 111,284,809.85
5. Step 5: Solve for x
   x = 111,284,809.85/10,915.94
6. Step 6: Final answer
   x = 10,194.71