Finding the Fourth Proportional to 10,356.72, 15,535.86 and 7,102.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,356.72 : 15,535.86 = 7,102.08 : x
2. Step 2: Convert to fraction form
   10,356.72/15,535.86 = 7,102.08/x
3. Step 3: Cross multiply
   10,356.72x = 15,535.86 × 7,102.08
4. Step 4: Simplify right side
   10,356.72x = 110,336,920.59
5. Step 5: Solve for x
   x = 110,336,920.59/10,356.72
6. Step 6: Final answer
   x = 10,653.65