Finding the Fourth Proportional to 12,385.95, 17,089.31 and 7,345.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,385.95 : 17,089.31 = 7,345.98 : x
2. Step 2: Convert to fraction form
   12,385.95/17,089.31 = 7,345.98/x
3. Step 3: Cross multiply
   12,385.95x = 17,089.31 × 7,345.98
4. Step 4: Simplify right side
   12,385.95x = 125,537,692.74
5. Step 5: Solve for x
   x = 125,537,692.74/12,385.95
6. Step 6: Final answer
   x = 10,135.49