Finding the Fourth Proportional to 12,913.56, 19,384.92 and 5,127.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,913.56 : 19,384.92 = 5,127.84 : x
2. Step 2: Convert to fraction form
   12,913.56/19,384.92 = 5,127.84/x
3. Step 3: Cross multiply
   12,913.56x = 19,384.92 × 5,127.84
4. Step 4: Simplify right side
   12,913.56x = 99,402,768.17
5. Step 5: Solve for x
   x = 99,402,768.17/12,913.56
6. Step 6: Final answer
   x = 7,697.55