Finding the Fourth Proportional to 43,086.84, 64,630.32 and 13,507.02

Step by Step Solution

1. Step 1: Write the proportion equation
   43,086.84 : 64,630.32 = 13,507.02 : x
2. Step 2: Convert to fraction form
   43,086.84/64,630.32 = 13,507.02/x
3. Step 3: Cross multiply
   43,086.84x = 64,630.32 × 13,507.02
4. Step 4: Simplify right side
   43,086.84x = 872,963,024.85
5. Step 5: Solve for x
   x = 872,963,024.85/43,086.84
6. Step 6: Final answer
   x = 20,260.55