Finding the Fourth Proportional to 39,258, 58,875.12 and 12,969.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,258 : 58,875.12 = 12,969.72 : x
2. Step 2: Convert to fraction form
   39,258/58,875.12 = 12,969.72/x
3. Step 3: Cross multiply
   39,258x = 58,875.12 × 12,969.72
4. Step 4: Simplify right side
   39,258x = 763,593,821.37
5. Step 5: Solve for x
   x = 763,593,821.37/39,258
6. Step 6: Final answer
   x = 19,450.66