Finding the Fourth Proportional to 30,798.56, 42,508.61 and 19,460.86

Step by Step Solution

1. Step 1: Write the proportion equation
   30,798.56 : 42,508.61 = 19,460.86 : x
2. Step 2: Convert to fraction form
   30,798.56/42,508.61 = 19,460.86/x
3. Step 3: Cross multiply
   30,798.56x = 42,508.61 × 19,460.86
4. Step 4: Simplify right side
   30,798.56x = 827,254,108.00
5. Step 5: Solve for x
   x = 827,254,108.00/30,798.56
6. Step 6: Final answer
   x = 26,860.16