Finding the Fourth Proportional to 10,928.58, 15,097.89 and 7,160.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,928.58 : 15,097.89 = 7,160.70 : x
2. Step 2: Convert to fraction form
   10,928.58/15,097.89 = 7,160.70/x
3. Step 3: Cross multiply
   10,928.58x = 15,097.89 × 7,160.70
4. Step 4: Simplify right side
   10,928.58x = 108,111,460.92
5. Step 5: Solve for x
   x = 108,111,460.92/10,928.58
6. Step 6: Final answer
   x = 9,892.54