Finding the Fourth Proportional to 12,928,688.04, 19,390,309.20 and 3,830,862.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,928,688.04 : 19,390,309.20 = 3,830,862.72 : x
2. Step 2: Convert to fraction form
   12,928,688.04/19,390,309.20 = 3,830,862.72/x
3. Step 3: Cross multiply
   12,928,688.04x = 19,390,309.20 × 3,830,862.72
4. Step 4: Simplify right side
   12,928,688.04x = 74,281,612,643,553.03
5. Step 5: Solve for x
   x = 74,281,612,643,553.03/12,928,688.04
6. Step 6: Final answer
   x = 5,745,487.28