Finding the Fourth Proportional to 12,978,057.72, 19,467,128.88 and 4,888,862.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,978,057.72 : 19,467,128.88 = 4,888,862.04 : x
2. Step 2: Convert to fraction form
   12,978,057.72/19,467,128.88 = 4,888,862.04/x
3. Step 3: Cross multiply
   12,978,057.72x = 19,467,128.88 × 4,888,862.04
4. Step 4: Simplify right side
   12,978,057.72x = 95,172,107,409,219.70
5. Step 5: Solve for x
   x = 95,172,107,409,219.70/12,978,057.72
6. Step 6: Final answer
   x = 7,333,308.99