Finding the Fourth Proportional to 42,887.76, 64,328.55 and 13,304.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,887.76 : 64,328.55 = 13,304.82 : x
2. Step 2: Convert to fraction form
   42,887.76/64,328.55 = 13,304.82/x
3. Step 3: Cross multiply
   42,887.76x = 64,328.55 × 13,304.82
4. Step 4: Simplify right side
   42,887.76x = 855,879,778.61
5. Step 5: Solve for x
   x = 855,879,778.61/42,887.76
6. Step 6: Final answer
   x = 19,956.27