Finding the Fourth Proportional to 5,123,956.05, 7,071,209.69 and 2,800,976.90

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123,956.05 : 7,071,209.69 = 2,800,976.90 : x
2. Step 2: Convert to fraction form
   5,123,956.05/7,071,209.69 = 2,800,976.90/x
3. Step 3: Cross multiply
   5,123,956.05x = 7,071,209.69 × 2,800,976.90
4. Step 4: Simplify right side
   5,123,956.05x = 19,806,294,947,385.23
5. Step 5: Solve for x
   x = 19,806,294,947,385.23/5,123,956.05
6. Step 6: Final answer
   x = 3,865,430.30