Finding the Fourth Proportional to 3,715.76, 5,128.77 and 2,536.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,715.76 : 5,128.77 = 2,536.61 : x
2. Step 2: Convert to fraction form
   3,715.76/5,128.77 = 2,536.61/x
3. Step 3: Cross multiply
   3,715.76x = 5,128.77 × 2,536.61
4. Step 4: Simplify right side
   3,715.76x = 13,009,663.63
5. Step 5: Solve for x
   x = 13,009,663.63/3,715.76
6. Step 6: Final answer
   x = 3,501.22