Finding the Fourth Proportional to 52,071.34, 78,106.32 and 12,628.81

Step by Step Solution

1. Step 1: Write the proportion equation
   52,071.34 : 78,106.32 = 12,628.81 : x
2. Step 2: Convert to fraction form
   52,071.34/78,106.32 = 12,628.81/x
3. Step 3: Cross multiply
   52,071.34x = 78,106.32 × 12,628.81
4. Step 4: Simplify right side
   52,071.34x = 986,389,875.08
5. Step 5: Solve for x
   x = 986,389,875.08/52,071.34
6. Step 6: Final answer
   x = 18,943.05