Finding the Fourth Proportional to 4,806,071.28, 7,209,806.76 and 1,440,540.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,806,071.28 : 7,209,806.76 = 1,440,540.72 : x
2. Step 2: Convert to fraction form
   4,806,071.28/7,209,806.76 = 1,440,540.72/x
3. Step 3: Cross multiply
   4,806,071.28x = 7,209,806.76 × 1,440,540.72
4. Step 4: Simplify right side
   4,806,071.28x = 10,386,020,221,111.27
5. Step 5: Solve for x
   x = 10,386,020,221,111.27/4,806,071.28
6. Step 6: Final answer
   x = 2,161,020.85