Finding the Fourth Proportional to 42,009.60, 62,992.52 and 19,817

Step by Step Solution

1. Step 1: Write the proportion equation
   42,009.60 : 62,992.52 = 19,817 : x
2. Step 2: Convert to fraction form
   42,009.60/62,992.52 = 19,817/x
3. Step 3: Cross multiply
   42,009.60x = 62,992.52 × 19,817
4. Step 4: Simplify right side
   42,009.60x = 1,248,322,768.84
5. Step 5: Solve for x
   x = 1,248,322,768.84/42,009.60
6. Step 6: Final answer
   x = 29,715.18