Finding the Fourth Proportional to 42,752.25, 64,128.41 and 11,587.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,752.25 : 64,128.41 = 11,587.50 : x
2. Step 2: Convert to fraction form
   42,752.25/64,128.41 = 11,587.50/x
3. Step 3: Cross multiply
   42,752.25x = 64,128.41 × 11,587.50
4. Step 4: Simplify right side
   42,752.25x = 743,087,892.94
5. Step 5: Solve for x
   x = 743,087,892.94/42,752.25
6. Step 6: Final answer
   x = 17,381.26