Finding the Fourth Proportional to 12,654,398.88, 17,464,490.72 and 7,148,128.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,654,398.88 : 17,464,490.72 = 7,148,128.54 : x
2. Step 2: Convert to fraction form
   12,654,398.88/17,464,490.72 = 7,148,128.54/x
3. Step 3: Cross multiply
   12,654,398.88x = 17,464,490.72 × 7,148,128.54
4. Step 4: Simplify right side
   12,654,398.88x = 124,838,424,653,799.45
5. Step 5: Solve for x
   x = 124,838,424,653,799.45/12,654,398.88
6. Step 6: Final answer
   x = 9,865,219.67