Finding the Fourth Proportional to 52,607.12, 78,910.89 and 13,164.12

Step by Step Solution

1. Step 1: Write the proportion equation
   52,607.12 : 78,910.89 = 13,164.12 : x
2. Step 2: Convert to fraction form
   52,607.12/78,910.89 = 13,164.12/x
3. Step 3: Cross multiply
   52,607.12x = 78,910.89 × 13,164.12
4. Step 4: Simplify right side
   52,607.12x = 1,038,792,425.27
5. Step 5: Solve for x
   x = 1,038,792,425.27/52,607.12
6. Step 6: Final answer
   x = 19,746.23