Finding the Fourth Proportional to 51,066.76, 76,634.72 and 17,787.12

Step by Step Solution

1. Step 1: Write the proportion equation
   51,066.76 : 76,634.72 = 17,787.12 : x
2. Step 2: Convert to fraction form
   51,066.76/76,634.72 = 17,787.12/x
3. Step 3: Cross multiply
   51,066.76x = 76,634.72 × 17,787.12
4. Step 4: Simplify right side
   51,066.76x = 1,363,110,960.81
5. Step 5: Solve for x
   x = 1,363,110,960.81/51,066.76
6. Step 6: Final answer
   x = 26,692.72