Finding the Fourth Proportional to 8,719.61, 12,064.70 and 7,602.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,719.61 : 12,064.70 = 7,602.86 : x
2. Step 2: Convert to fraction form
   8,719.61/12,064.70 = 7,602.86/x
3. Step 3: Cross multiply
   8,719.61x = 12,064.70 × 7,602.86
4. Step 4: Simplify right side
   8,719.61x = 91,726,274.21
5. Step 5: Solve for x
   x = 91,726,274.21/8,719.61
6. Step 6: Final answer
   x = 10,519.54