Finding the Fourth Proportional to 12,888.32, 19,334.16 and 3,654.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,888.32 : 19,334.16 = 3,654.56 : x
2. Step 2: Convert to fraction form
   12,888.32/19,334.16 = 3,654.56/x
3. Step 3: Cross multiply
   12,888.32x = 19,334.16 × 3,654.56
4. Step 4: Simplify right side
   12,888.32x = 70,657,847.77
5. Step 5: Solve for x
   x = 70,657,847.77/12,888.32
6. Step 6: Final answer
   x = 5,482.32