Finding the Fourth Proportional to 12,890,164.23, 17,788,071.42 and 7,088,945.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,890,164.23 : 17,788,071.42 = 7,088,945.85 : x
2. Step 2: Convert to fraction form
   12,890,164.23/17,788,071.42 = 7,088,945.85/x
3. Step 3: Cross multiply
   12,890,164.23x = 17,788,071.42 × 7,088,945.85
4. Step 4: Simplify right side
   12,890,164.23x = 126,098,675,072,312.61
5. Step 5: Solve for x
   x = 126,098,675,072,312.61/12,890,164.23
6. Step 6: Final answer
   x = 9,782,549.92