Finding the Fourth Proportional to 10,930.95, 15,074.81 and 7,152.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,930.95 : 15,074.81 = 7,152.91 : x
2. Step 2: Convert to fraction form
   10,930.95/15,074.81 = 7,152.91/x
3. Step 3: Cross multiply
   10,930.95x = 15,074.81 × 7,152.91
4. Step 4: Simplify right side
   10,930.95x = 107,828,712.57
5. Step 5: Solve for x
   x = 107,828,712.57/10,930.95
6. Step 6: Final answer
   x = 9,864.53