Finding the Fourth Proportional to 13,925.42, 19,216.81 and 7,875.55

Step by Step Solution

1. Step 1: Write the proportion equation
   13,925.42 : 19,216.81 = 7,875.55 : x
2. Step 2: Convert to fraction form
   13,925.42/19,216.81 = 7,875.55/x
3. Step 3: Cross multiply
   13,925.42x = 19,216.81 × 7,875.55
4. Step 4: Simplify right side
   13,925.42x = 151,342,981.86
5. Step 5: Solve for x
   x = 151,342,981.86/13,925.42
6. Step 6: Final answer
   x = 10,868.11