Finding the Fourth Proportional to 10,888.55, 15,005.13 and 7,345.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,888.55 : 15,005.13 = 7,345.61 : x
2. Step 2: Convert to fraction form
   10,888.55/15,005.13 = 7,345.61/x
3. Step 3: Cross multiply
   10,888.55x = 15,005.13 × 7,345.61
4. Step 4: Simplify right side
   10,888.55x = 110,221,757.95
5. Step 5: Solve for x
   x = 110,221,757.95/10,888.55
6. Step 6: Final answer
   x = 10,122.73