Finding the Fourth Proportional to 12,915.06, 19,367.72 and 10,174.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,915.06 : 19,367.72 = 10,174.02 : x
2. Step 2: Convert to fraction form
   12,915.06/19,367.72 = 10,174.02/x
3. Step 3: Cross multiply
   12,915.06x = 19,367.72 × 10,174.02
4. Step 4: Simplify right side
   12,915.06x = 197,047,570.63
5. Step 5: Solve for x
   x = 197,047,570.63/12,915.06
6. Step 6: Final answer
   x = 15,257.19