Finding the Fourth Proportional to 42,766.24, 64,156.32 and 13,184.08

Step by Step Solution

1. Step 1: Write the proportion equation
   42,766.24 : 64,156.32 = 13,184.08 : x
2. Step 2: Convert to fraction form
   42,766.24/64,156.32 = 13,184.08/x
3. Step 3: Cross multiply
   42,766.24x = 64,156.32 × 13,184.08
4. Step 4: Simplify right side
   42,766.24x = 845,842,055.39
5. Step 5: Solve for x
   x = 845,842,055.39/42,766.24
6. Step 6: Final answer
   x = 19,778.27