Finding the Fourth Proportional to 8,789,131.92, 12,128,870.25 and 4,868,875.64

Step by Step Solution

1. Step 1: Write the proportion equation
   8,789,131.92 : 12,128,870.25 = 4,868,875.64 : x
2. Step 2: Convert to fraction form
   8,789,131.92/12,128,870.25 = 4,868,875.64/x
3. Step 3: Cross multiply
   8,789,131.92x = 12,128,870.25 × 4,868,875.64
4. Step 4: Simplify right side
   8,789,131.92x = 59,053,960,840,301.36
5. Step 5: Solve for x
   x = 59,053,960,840,301.36/8,789,131.92
6. Step 6: Final answer
   x = 6,718,975.36