Finding the Fourth Proportional to 42,886.76, 64,327.05 and 13,303.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,886.76 : 64,327.05 = 13,303.82 : x
2. Step 2: Convert to fraction form
   42,886.76/64,327.05 = 13,303.82/x
3. Step 3: Cross multiply
   42,886.76x = 64,327.05 × 13,303.82
4. Step 4: Simplify right side
   42,886.76x = 855,795,655.15
5. Step 5: Solve for x
   x = 855,795,655.15/42,886.76
6. Step 6: Final answer
   x = 19,954.78