Finding the Fourth Proportional to 13,789.51, 19,028.52 and 8,484.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,789.51 : 19,028.52 = 8,484.42 : x
2. Step 2: Convert to fraction form
   13,789.51/19,028.52 = 8,484.42/x
3. Step 3: Cross multiply
   13,789.51x = 19,028.52 × 8,484.42
4. Step 4: Simplify right side
   13,789.51x = 161,445,955.66
5. Step 5: Solve for x
   x = 161,445,955.66/13,789.51
6. Step 6: Final answer
   x = 11,707.88