Finding the Fourth Proportional to 10,655.63, 15,988.05 and 5,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,655.63 : 15,988.05 = 5,719.50 : x
2. Step 2: Convert to fraction form
   10,655.63/15,988.05 = 5,719.50/x
3. Step 3: Cross multiply
   10,655.63x = 15,988.05 × 5,719.50
4. Step 4: Simplify right side
   10,655.63x = 91,443,733.38
5. Step 5: Solve for x
   x = 91,443,733.38/10,655.63
6. Step 6: Final answer
   x = 8,581.73