Finding the Fourth Proportional to 3,918.47, 5,873.55 and 1,836.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,918.47 : 5,873.55 = 1,836.72 : x
2. Step 2: Convert to fraction form
   3,918.47/5,873.55 = 1,836.72/x
3. Step 3: Cross multiply
   3,918.47x = 5,873.55 × 1,836.72
4. Step 4: Simplify right side
   3,918.47x = 10,788,066.76
5. Step 5: Solve for x
   x = 10,788,066.76/3,918.47
6. Step 6: Final answer
   x = 2,753.13