Finding the Fourth Proportional to 43,061.86, 64,588.61 and 13,076.36

Step by Step Solution

1. Step 1: Write the proportion equation
   43,061.86 : 64,588.61 = 13,076.36 : x
2. Step 2: Convert to fraction form
   43,061.86/64,588.61 = 13,076.36/x
3. Step 3: Cross multiply
   43,061.86x = 64,588.61 × 13,076.36
4. Step 4: Simplify right side
   43,061.86x = 844,583,787.48
5. Step 5: Solve for x
   x = 844,583,787.48/43,061.86
6. Step 6: Final answer
   x = 19,613.27