Finding the Fourth Proportional to 39,078, 58,626.72 and 11,376

Step by Step Solution

1. Step 1: Write the proportion equation
   39,078 : 58,626.72 = 11,376 : x
2. Step 2: Convert to fraction form
   39,078/58,626.72 = 11,376/x
3. Step 3: Cross multiply
   39,078x = 58,626.72 × 11,376
4. Step 4: Simplify right side
   39,078x = 666,937,566.72
5. Step 5: Solve for x
   x = 666,937,566.72/39,078
6. Step 6: Final answer
   x = 17,066.83