Finding the Fourth Proportional to 10,587.78, 15,875.52 and 7,081.74

Step by Step Solution

1. Step 1: Write the proportion equation
   10,587.78 : 15,875.52 = 7,081.74 : x
2. Step 2: Convert to fraction form
   10,587.78/15,875.52 = 7,081.74/x
3. Step 3: Cross multiply
   10,587.78x = 15,875.52 × 7,081.74
4. Step 4: Simplify right side
   10,587.78x = 112,426,305.00
5. Step 5: Solve for x
   x = 112,426,305.00/10,587.78
6. Step 6: Final answer
   x = 10,618.50