Finding the Fourth Proportional to 13,878.18, 19,152.34 and 7,590.55

Step by Step Solution

1. Step 1: Write the proportion equation
   13,878.18 : 19,152.34 = 7,590.55 : x
2. Step 2: Convert to fraction form
   13,878.18/19,152.34 = 7,590.55/x
3. Step 3: Cross multiply
   13,878.18x = 19,152.34 × 7,590.55
4. Step 4: Simplify right side
   13,878.18x = 145,376,827.82
5. Step 5: Solve for x
   x = 145,376,827.82/13,878.18
6. Step 6: Final answer
   x = 10,475.21