Finding the Fourth Proportional to 20,903,498.56, 31,355,562.96 and 7,257,078.24

Step by Step Solution

1. Step 1: Write the proportion equation
   20,903,498.56 : 31,355,562.96 = 7,257,078.24 : x
2. Step 2: Convert to fraction form
   20,903,498.56/31,355,562.96 = 7,257,078.24/x
3. Step 3: Cross multiply
   20,903,498.56x = 31,355,562.96 × 7,257,078.24
4. Step 4: Simplify right side
   20,903,498.56x = 227,549,773,659,966
5. Step 5: Solve for x
   x = 227,549,773,659,966/20,903,498.56
6. Step 6: Final answer
   x = 10,885,726.76