Finding the Fourth Proportional to 10,145.79, 15,188.72 and 7,495.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,145.79 : 15,188.72 = 7,495.71 : x
2. Step 2: Convert to fraction form
   10,145.79/15,188.72 = 7,495.71/x
3. Step 3: Cross multiply
   10,145.79x = 15,188.72 × 7,495.71
4. Step 4: Simplify right side
   10,145.79x = 113,850,145.95
5. Step 5: Solve for x
   x = 113,850,145.95/10,145.79
6. Step 6: Final answer
   x = 11,221.42