Finding the Fourth Proportional to 30,670.56, 42,353.10 and 19,360.08

Step by Step Solution

1. Step 1: Write the proportion equation
   30,670.56 : 42,353.10 = 19,360.08 : x
2. Step 2: Convert to fraction form
   30,670.56/42,353.10 = 19,360.08/x
3. Step 3: Cross multiply
   30,670.56x = 42,353.10 × 19,360.08
4. Step 4: Simplify right side
   30,670.56x = 819,959,404.25
5. Step 5: Solve for x
   x = 819,959,404.25/30,670.56
6. Step 6: Final answer
   x = 26,734.41