Finding the Fourth Proportional to 12,925.16, 19,384.86 and 5,131.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,925.16 : 19,384.86 = 5,131.88 : x
2. Step 2: Convert to fraction form
   12,925.16/19,384.86 = 5,131.88/x
3. Step 3: Cross multiply
   12,925.16x = 19,384.86 × 5,131.88
4. Step 4: Simplify right side
   12,925.16x = 99,480,775.34
5. Step 5: Solve for x
   x = 99,480,775.34/12,925.16
6. Step 6: Final answer
   x = 7,696.68