Finding the Fourth Proportional to 10,472.08, 15,715.41 and 7,188.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,472.08 : 15,715.41 = 7,188.34 : x
2. Step 2: Convert to fraction form
   10,472.08/15,715.41 = 7,188.34/x
3. Step 3: Cross multiply
   10,472.08x = 15,715.41 × 7,188.34
4. Step 4: Simplify right side
   10,472.08x = 112,967,710.32
5. Step 5: Solve for x
   x = 112,967,710.32/10,472.08
6. Step 6: Final answer
   x = 10,787.51