Finding the Fourth Proportional to 43,209, 64,819.98 and 15,513.48

Step by Step Solution

1. Step 1: Write the proportion equation
   43,209 : 64,819.98 = 15,513.48 : x
2. Step 2: Convert to fraction form
   43,209/64,819.98 = 15,513.48/x
3. Step 3: Cross multiply
   43,209x = 64,819.98 × 15,513.48
4. Step 4: Simplify right side
   43,209x = 1,005,583,463.33
5. Step 5: Solve for x
   x = 1,005,583,463.33/43,209
6. Step 6: Final answer
   x = 23,272.55