Finding the Fourth Proportional to 42,832.50, 64,251.98 and 13,253.32

Step by Step Solution

1. Step 1: Write the proportion equation
   42,832.50 : 64,251.98 = 13,253.32 : x
2. Step 2: Convert to fraction form
   42,832.50/64,251.98 = 13,253.32/x
3. Step 3: Cross multiply
   42,832.50x = 64,251.98 × 13,253.32
4. Step 4: Simplify right side
   42,832.50x = 851,552,051.57
5. Step 5: Solve for x
   x = 851,552,051.57/42,832.50
6. Step 6: Final answer
   x = 19,880.98