Finding the Fourth Proportional to 35,664.63, 53,451.17 and 13,451.55

Step by Step Solution

1. Step 1: Write the proportion equation
   35,664.63 : 53,451.17 = 13,451.55 : x
2. Step 2: Convert to fraction form
   35,664.63/53,451.17 = 13,451.55/x
3. Step 3: Cross multiply
   35,664.63x = 53,451.17 × 13,451.55
4. Step 4: Simplify right side
   35,664.63x = 719,001,018.56
5. Step 5: Solve for x
   x = 719,001,018.56/35,664.63
6. Step 6: Final answer
   x = 20,160.06