Finding the Fourth Proportional to 12,915.81, 19,373.90 and 7,362.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,915.81 : 19,373.90 = 7,362.54 : x
2. Step 2: Convert to fraction form
   12,915.81/19,373.90 = 7,362.54/x
3. Step 3: Cross multiply
   12,915.81x = 19,373.90 × 7,362.54
4. Step 4: Simplify right side
   12,915.81x = 142,641,076.89
5. Step 5: Solve for x
   x = 142,641,076.89/12,915.81
6. Step 6: Final answer
   x = 11,043.91